The location of the state of Maryland Paleontology in Maryland refers to

paleontological Paleontology (), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (geology), epoch (roughly 11,700 years before present). It includes t ...

research occurring within or conducted by people from the

U.S. The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

state of

Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...

. The

invertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...

fossils of Maryland are similar to those of neighboring

Delaware Delaware ( ) is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. The state takes its name from the adjacent Del ...

. For most of the early

Paleozoic era The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ' ...

, Maryland was covered by a shallow

sea The sea, connected as the world ocean or simply the ocean, is the body of salty water that covers approximately 71% of the Earth's surface. The word sea is also used to denote second-order sections of the sea, such as the Mediterranean Sea, ...

, although it was above sea level for portions of the

Ordovician The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start ...

and

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ...

. The ancient marine life of Maryland included

brachiopods Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, whi ...

and

bryozoans Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquatic invertebrate animals, nearly all living in sedentary colonies. Typically about long, they have a special feeding structure called a l ...

while

horsetails ''Equisetum'' (; horsetail, snake grass, puzzlegrass) is the only living genus in Equisetaceae, a family of ferns, which reproduce by spores rather than seeds. ''Equisetum'' is a "living fossil", the only living genus of the entire subclass Eq ...

and

scale trees ''Lepidodendron'' is an extinct genus of primitive vascular plants belonging to the family Lepidodendraceae, part of a group of Lycopodiopsida known as scale trees or arborescent lycophytes, related to Isoetes, quillworts and Lycopodiopsida, lyco ...

grew on land. By the end of the era, the sea had left the state completely. In the early

Mesozoic The Mesozoic Era ( ), also called the Age of Reptiles, the Age of Conifers, and colloquially as the Age of the Dinosaurs is the second-to-last era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceo ...

Pangaea Pangaea or Pangea () was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Carboniferous approximately 335 million y ...

was splitting up. The same geologic forces that divided the supercontinent formed massive

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...

Dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is t ...

footprints Footprints are the impressions or images left behind by a person walking or running. Hoofprints and pawprints are those left by animals with hoof, hooves or paws rather than foot, feet, while "shoeprints" is the specific term for prints made by ...

were preserved along their shores. During the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...

, the state was home to dinosaurs. During the early part of the

Cenozoic era The Cenozoic ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is characterised by the dominance of mammals, birds and flowering plants, a cooling and drying climate, and the current configura ...

, the state was alternatingly submerged by sea water or exposed. During the

Ice Age An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and gree ...

mastodons A mastodon ( 'breast' + 'tooth') is any proboscidean belonging to the extinct genus ''Mammut'' (family Mammutidae). Mastodons inhabited North and Central America during the late Miocene or late Pliocene up to their extinction at the end of th ...

lived in the state. Local

Delaware people The Lenape (, , or Lenape , del, Lënapeyok) also called the Leni Lenape, Lenni Lenape and Delaware people, are an indigenous peoples of the Northeastern Woodlands, who live in the United States and Canada. Their historical territory inclu ...

told myths about a creature called the "Grandfather of the Monsters" and Little People that may have been inspired by local dinosaur footprints. By the 1850s, formal scientific investigation of the local fossils had commenced. Early discoveries included ''

Astrodon ''Astrodon'' (aster: star, odon: tooth) is a genus of large herbivorous sauropod dinosaur, measuring in length, in height and in body mass. It lived in what is now the eastern United States during the Early Cretaceous period, and fossils ha ...

'', the first scientifically described

sauropod Sauropoda (), whose members are known as sauropods (; from '' sauro-'' + '' -pod'', 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their bo ...

from North America. Maryland was home to one of the most significant

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

mammal discoveries in American history: the early 20th century discovery of

fossils in an Allegany County

cave A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea ...

. The

Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...

murex snail Muricidae is a large and varied Taxonomy (biology), taxonomic family (biology), family of small to large predatory sea snails, marine (ocean), marine gastropod mollusks, common name, commonly known as murex snails or rock snails. With about 1,600 ...

'' Ecphora gardnerae gardnerae'' is the Maryland

state fossil Most American states have made a state fossil designation, in many cases during the 1980s. It is common to designate one species in which fossilization has occurred, rather than a single specimen, or a category of fossils not limited to a single ...

. ''

Astrodon johnstoni ''Astrodon'' (aster: star, odon: tooth) is a genus of large herbivorous sauropod dinosaur, measuring in length, in height and in body mass. It lived in what is now the eastern United States during the Early Cretaceous period, and fossils have ...

'' is the

state dinosaur State may refer to: Arts, entertainment, and media Literature * '' State Magazine'', a monthly magazine published by the U.S. Department of State * ''The State'' (newspaper), a daily newspaper in Columbia, South Carolina, United States * ''Our ...

of Maryland.

Prehistory

Precambrian The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the ...

fossils are known from Maryland. As such, the state's

fossil record A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...

does not begin until the

Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ' ...

. Maryland was covered by a warm

shallow sea An inland sea (also known as an epeiric sea or an epicontinental sea) is a continental body of water which is very large and is either completely surrounded by dry land or connected to an ocean by a river, strait, or "arm of the sea". An inland s ...

during the

Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...

and

periods. Geologic forces elevated the state above sea level late in the latter period, although the seas later returned. During the

another period of uplift raised the state out of the sea, before erosion and subsidence brought it back under. One final episode of uplift during the Paleozoic occurred at the boundary between the

Carboniferous The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carbonifero ...

and

Permian The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleoz ...

. Maryland was home to creatures like

and

during periods where the state was under seawater. While the sea was absent,

and

grew across the state. Maryland was hot and humid during the late Paleozoic. By the end of the era the state was almost entirely a terrestrial environment. During the Mesozoic powerful geologic forces were splitting the supercontinent of Pangaea. These same forces formed rifts in Maryland. Lakes and river formed in these rifts. Elements of the local flora would end up fossilized in sediments deposited by these same bodies of water. The first of two

dinosaur footprint A fossil track or ichnite (Greek "''ιχνιον''" (''ichnion'') – a track, trace or footstep) is a fossilized footprint. This is a type of trace fossil. A fossil trackway is a sequence of fossil tracks left by a single organism. Over the year ...

bearing formations in Maryland were laid down during the Late Triassic on sediments that later became the Gettysburg Formation north of Emmitsburg in Frederick County. For a 30 million year interval spanning the

Late Triassic The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch ...

Early Jurassic The Early Jurassic Epoch (geology), Epoch (in chronostratigraphy corresponding to the Lower Jurassic series (stratigraphy), Series) is the earliest of three epochs of the Jurassic Period. The Early Jurassic starts immediately after the Triassic-J ...

boundary, the

Culpeper Basin The Culpeper Basin is one of the Newark Supergroup's Triassic rift basins. It lies east of the Appalachian Mountains and extends from the Madison County—Orange County line in Virginia to Frederick, Maryland. Sea levels fluctuated during the ensuing Cretaceous period. Sometimes Maryland was subemerged under the sea and sometimes it was exposed as dry land. Contemporary marine life included brachiopods and molluscs. Maryland and

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

, D.C. are the only places where

Early Cretaceous The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Pro ...

dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is t ...

remains are known to have been preserved east of the

Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...

. The only known

Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the ...

dinosaur fossils discovered in Maryland were found in the

Severn Formation The Severn Formation is a Mesozoic geologic formation in Maryland. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607. ...

Prince George's County ) , demonym = Prince Georgian , ZIP codes = 20607–20774 , area codes = 240, 301 , founded date = April 23 , founded year = 1696 , named for = Prince George of Denmark , leader_title = Executive , leader_name = Angela D. Alsobrook ...

east of Washington, D.C. Many Late Cretaceous sharks such as Squalicorax are found in the Severn formation, as well as the occasional Mosasaur fossil. During the ensuing Tertiary period of the Cenozoic era, sea levels also varied substantially. During the

Paleocene The Paleocene, ( ) or Palaeocene, is a geological epoch (geology), epoch that lasted from about 66 to 56 mya (unit), million years ago (mya). It is the first epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), E ...

Maryland was home to at least 10 different kinds of

ostracods Ostracods, or ostracodes, are a class of the Crustacea (class Ostracoda), sometimes known as seed shrimp. Some 70,000 species (only 13,000 of which are extant) have been identified, grouped into several orders. They are small crustaceans, typical ...

. During the

, Maryland was home to the

sea turtle Sea turtles (superfamily Chelonioidea), sometimes called marine turtles, are reptiles of the order Testudines and of the suborder Cryptodira. The seven existing species of sea turtles are the flatback, green, hawksbill, leatherback, loggerhead, ...

Bothremys ''Bothremys'' is an extinct genus of bothremydid pleurodiran turtle that was discovered near Gloucester, New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north ...

'', which may have fed by crushing

snails A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gastrop ...

. The famed Chesapeake group exposes along the coast of Calvert County is known for its diverse Marine Mammal fauna. Many species of shark swam over Calvert County, including ''Otodus megalodon'' which was the largest shark ever to exist. The large amount of juveniles may mean it was a breeding or nursing ground for them. The Chesapeake group is also home to Maryland's state fossil, ''Ecphora gardenerae'' was one of the first described fossils in North America. It is known for its fragility and distinctive color, and recently was discovered to hold remnants of the original proteins from the living animal. Glaciers never reached Maryland during the later Ice Age. However, they still affected the local environment as when water was trapped frozen in glaciers it caused the local sea levels to drop. The local climate was cold and the local flora correspondingly different. The local wildlife was also different and included such animals as mastodons. During warmer periods the glaciers would melt and sea levels rise. Clams, oysters, and snails lived in these higher waters and were preserved in the eastern part of the state. On land, Pleistocene Maryland was home to a great diversity of mammals. During the middle of that

epoch In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured. The moment of epoch is usually decided by ...

, Maryland was covered in a moist

woodland A woodland () is, in the broad sense, land covered with trees, or in a narrow sense, synonymous with wood (or in the U.S., the ''plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunlight and limited shade (see ...

habitat. Around this time a cavity in the

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

composing an Allegany County

hill A hill is a landform that extends above the surrounding terrain. It often has a distinct Summit (topography), summit. Terminology The distinction between a hill and a mountain is unclear and largely subjective, but a hill is universally con ...

served as a death trap for many unwary animals over an extended period. Among the preserved remains were animals from very warm, intermediate and very cold climates, documenting the changes in the make up of the local wildlife in response to the planet's changing climate. The mammals typifying the warm "southern" fauna included some of the

bats Bats are mammals of the order Chiroptera.''cheir'', "hand" and πτερόν''pteron'', "wing". With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most bi ...

peccaries A peccary (also javelina or skunk pig) is a medium-sized, pig-like hoofed mammal of the family Tayassuidae (New World pigs). They are found throughout Central and South America, Trinidad in the Caribbean, and in the southwestern area of North A ...

, and a

tapir Tapirs ( ) are large, herbivorous mammals belonging to the family Tapiridae. They are similar in shape to a pig, with a short, prehensile nose trunk. Tapirs inhabit jungle and forest regions of South and Central America, with one species inhabit ...

. A

crocodile Crocodiles (family (biology), family Crocodylidae) or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. The term crocodile is sometimes used even more loosely to inclu ...

added a reptilian element to this "southern" fauna. The intermediate latitude-type fauna was characterized by a

badger Badgers are short-legged omnivores in the family Mustelidae (which also includes the otters, wolverines, martens, minks, polecats, weasels, and ferrets). Badgers are a polyphyletic rather than a natural taxonomic grouping, being united b ...

, a variety of

bear Bears are carnivoran mammals of the family Ursidae. They are classified as caniforms, or doglike carnivorans. Although only eight species of bears are extant, they are widespread, appearing in a wide variety of habitats throughout the Nor ...

s, deer, a

mastodon A mastodon ( 'breast' + 'tooth') is any proboscidean belonging to the extinct genus ''Mammut'' (family Mammutidae). Mastodons inhabited North and Central America during the late Miocene or late Pliocene up to their extinction at the end of th ...

otter Otters are carnivorous mammals in the subfamily Lutrinae. The 13 extant otter species are all semiaquatic, aquatic, or marine, with diets based on fish and invertebrates. Lutrinae is a branch of the Mustelidae family, which also includes wea ...

, and a

puma Puma or PUMA may refer to: Animals * ''Puma'' (genus), a genus in the family Felidae ** Puma (species) or cougar, a large cat Businesses and organisations * Puma (brand), a multinational shoe and sportswear company * Puma Energy, a mid- and d ...

-like animal. The mammals more typical of northern habitats included

elk The elk (''Cervus canadensis''), also known as the wapiti, is one of the largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. The common ...

, a

fisher Fisher is an archaic term for a fisherman, revived as gender-neutral. Fisher, Fishers or The Fisher may also refer to: Places Australia *Division of Fisher, an electoral district in the Australian House of Representatives, in Queensland *Elect ...

hare Hares and jackrabbits are mammals belonging to the genus ''Lepus''. They are herbivores, and live solitarily or in pairs. They nest in slight depressions called forms, and their young are able to fend for themselves shortly after birth. The ge ...

lemming A lemming is a small rodent, usually found in or near the Arctic in tundra biomes. Lemmings form the subfamily Arvicolinae (also known as Microtinae) together with voles and muskrats, which form part of the superfamily Muroidea, which also include ...

mink Mink are dark-colored, semiaquatic, carnivorous mammals of the genera ''Neogale'' and '' Mustela'' and part of the family Mustelidae, which also includes weasels, otters, and ferrets. There are two extant species referred to as "mink": the A ...

jumping mouse Zapodidae, the jumping mice, is a family of mouse-like rodents in North America and China. Although mouse-like in general appearance, these rodents are distinguished by their elongated hind limbs, and, typically, by the presence of four pairs o ...

muskrat The muskrat (''Ondatra zibethicus'') is a medium-sized semiaquatic rodent native to North America and an introduced species in parts of Europe, Asia, and South America. The muskrat is found in wetlands over a wide range of climates and habitat ...

pika A pika ( or ; archaically spelled pica) is a small, mountain-dwelling mammal found in Asia and North America. With short limbs, very round body, an even coat of fur, and no external tail, they resemble their close relative, the rabbit, but wi ...

porcupine Porcupines are large rodents with coats of sharp spines, or quills, that protect them against predation. The term covers two families of animals: the Old World porcupines of family Hystricidae, and the New World porcupines of family, Erethizont ...

, long tailed shrew,

red squirrel The red squirrel (''Sciurus vulgaris'') is a species of tree squirrel in the genus ''Sciurus'' common throughout Europe and Asia. The red squirrel is an arboreal, primarily herbivorous rodent. In Great Britain, Ireland, and in Italy numbers ...

, and

wolverine The wolverine (), (''Gulo gulo''; ''Gulo'' is Latin for "gluttony, glutton"), also referred to as the glutton, carcajou, or quickhatch (from East Cree, ''kwiihkwahaacheew''), is the largest land-dwelling species of the family Mustelidae. It is ...

. Large animals are conspicuously absent from the deposit and few of the fossils suggest anything larger than a modern

black bear Black bear or Blackbear may refer to: Animals * American black bear (''Ursus americanus''), a North American bear species * Asian black bear (''Ursus thibetanus''), an Asian bear species Music * Black Bear (band), a Canadian First Nations group ...

. Also conspicuous is the absence of many kinds of animal that are common in the Pleistocene deposits in the United States like

bison Bison are large bovines in the genus ''Bison'' (Greek: "wild ox" (bison)) within the tribe Bovini. Two extant and numerous extinct species are recognised. Of the two surviving species, the American bison, ''B. bison'', found only in North Ame ...

camels A camel (from: la, camelus and grc-gre, κάμηλος (''kamēlos'') from Hebrew or Phoenician: גָמָל ''gāmāl''.) is an even-toed ungulate in the genus ''Camelus'' that bears distinctive fatty deposits known as "humps" on its back. C ...

giant ground sloths ''Megatherium'' ( ; from Greek () 'great' + () 'beast') is an extinct genus of ground sloths endemic to South America that lived from the Early Pliocene through the end of the Pleistocene. It is best known for the elephant-sized type species ' ...

musk oxen Musk (Persian: مشک, ''Mushk'') is a class of aromatic substances commonly used as base notes in perfumery. They include glandular secretions from animals such as the musk deer, numerous plants emitting similar fragrances, and artificial subs ...

, relatives of modern elephants, and saber teeth.

History

Indigenous interpretations

The

Lenape The Lenape (, , or Lenape , del, Lënapeyok) also called the Leni Lenape, Lenni Lenape and Delaware people, are an indigenous peoples of the Northeastern Woodlands, who live in the United States and Canada. Their historical territory includ ...

have lived in Maryland and told myths likely influenced by the

theropod Theropoda (; ), whose members are known as theropods, is a dinosaur clade that is characterized by hollow bones and three toes and claws on each limb. Theropods are generally classed as a group of saurischian dinosaurs. They were ancestrally c ...

dinosaur tracks A trace fossil, also known as an ichnofossil (; from el, ἴχνος ''ikhnos'' "trace, track"), is a fossil record of biological activity but not the preserved remains of the plant or animal itself. Trace fossils contrast with body fossils, ...

common in the area. They believed that in the early days of earth's history the land and sea were full of

Monsters A monster is a type of fictional creature found in horror, fantasy, science fiction, folklore, mythology and religion. Monsters are very often depicted as dangerous and aggressive with a strange, grotesque appearance that causes terror and fe ...

. The grandfather of these Monsters was the most terrifying Monster of all and menaced all living creatures. He was so huge that when he crossed the mountains he left footprints in solid rock. The creature was eventually killed by

lightning Lightning is a naturally occurring electrostatic discharge during which two electric charge, electrically charged regions, both in the atmosphere or with one on the land, ground, temporarily neutralize themselves, causing the instantaneous ...

after being trapped in a

mountain pass A mountain pass is a navigable route through a mountain range or over a ridge. Since many of the world's mountain ranges have presented formidable barriers to travel, passes have played a key role in trade, war, and both Human migration, human a ...

Folklorist Folklore studies, less often known as folkloristics, and occasionally tradition studies or folk life studies in the United Kingdom, is the branch of anthropology devoted to the study of folklore. This term, along with its synonyms, gained currenc ...

Adrienne Mayor Adrienne Mayor (born 1946) is a historian of ancient science and a classical folklorist. Mayor specializes in ancient history and the study of "folk science", or how pre-scientific cultures interpreted data about the natural world, and how these ...

has mused that the depiction of the grandfather of the Monsters in the Delaware myth resembles modern portrayals of ''

Tyrannosaurus rex ''Tyrannosaurus'' is a genus of large theropod dinosaur. The species ''Tyrannosaurus rex'' (''rex'' meaning "king" in Latin), often called ''T. rex'' or colloquially ''T-Rex'', is one of the best represented theropods. ''Tyrannosaurus'' live ...

'' as a fearless, superlative predator. The Delaware also had a fossil related custom where the women of the tribe collected "uki rocks" which were imprinted with the tracks of small dinosaurs. The Lenape attributed these footprints to mythical Little People. They believed that placing the trace fossil-bearing uki rocks along the edges of their fields would benefit their crops.

Scientific research

1859 Events January–March * January 21 – José Mariano Salas (1797–1867) becomes Conservative interim President of Mexico. * January 24 ( O. S.) – Wallachia and Moldavia are united under Alexandru Ioan Cuza (Romania since 1866, final u ...

, state

agricultural Agriculture or farming is the practice of cultivating Plant, plants and livestock. Agriculture was the key development in the rise of Sedentism, sedentary human civilization, whereby farming of Domestication, domesticated species created food ...

chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe th ...

Philip T. Tyson discovered the first

fossils of the

Arundel Formation The Arundel Formation, also known as the Arundel Clay, is a clay-rich sedimentary rock formation, within the Potomac Group, found in Maryland of the United States of America. It is of Aptian age (Lower Cretaceous). This rock unit had been economi ...

in an

iron Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in f ...

pit at Bladensburg,

. The discovery consisted of two

fossil teeth. Around the same time Tyson also discovered the Arundel Formation's first known fossil

cycad Cycads are seed plants that typically have a stout and woody (ligneous) trunk (botany), trunk with a crown (botany), crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants o ...

trunks. 4Tyson took the dinosaur teeth to a local doctor named

Christopher Johnston Christopher Johnston may refer to: * Christopher Johnston (Assyriologist) (1856–1914), American physician and Assyriologist, a scholar of ancient Mesopotamia * Chris Clavin (Christopher Johnston, born 1979), musician and record label owner * Chris ...

. Johnston cut thin sections of one tooth to examine it under a microscope. He published a paper titled "Note Upon Odontography" in the American Journal of Dental Science. Johnson named the teeth ''

''. In

1865 Events January–March * January 4 – The New York Stock Exchange opens its first permanent headquarters at Broad Street (Manhattan), 10-12 Broad near Wall Street, in New York City. * January 13 – American Civil War : Sec ...

Joseph Leidy Joseph Mellick Leidy (September 9, 1823 – April 30, 1891) was an American paleontologist, parasitologist and anatomist. Leidy was professor of anatomy at the University of Pennsylvania, later was a professor of natural history at Swarthmore ...

formally named the species ''

'' after Christopher Johnston. This represents the first formal naming of a

species in North America. In late 1887

Othniel Charles Marsh Othniel Charles Marsh (October 29, 1831 – March 18, 1899) was an American professor of Paleontology in Yale College and President of the National Academy of Sciences. He was one of the preeminent scientists in the field of paleontology. Among h ...

sent

John Bell Hatcher John Bell Hatcher (October 11, 1861 – July 3, 1904) was an American paleontologist and fossil hunter known as the "king of collectors" and best known for discovering ''Torosaurus'' and ''Triceratops'', two genera of dinosaurs described by Ot ...

to look for dinosaur remains in the Arundel Clay. While on this expedition, Hatcher discovered an iron mine on a farm near

Muirkirk Muirkirk ( gd, Eaglais an t-Slèibh) is a small village in East Ayrshire, southwest Scotland. It is located on the north bank of the River Ayr, between Cumnock and Glenbuck on the A70. Conservation The Muirkirk & North Lowther Uplands Special ...

owned by a man named William Coffin. This mine was nicknamed Swampoodle by the locals and became the best source of Early Cretaceous dinosaur fossils on the east coast of the US. Hatcher did most of his Maryland excavations during the winter, which was particularly harsh that year. Early in 1888, Hatcher continued his grueling winter excavations of Arundel Clay dinosaur fossils. His efforts helped the region between Maryland and

Washington D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, Na ...

become known as Dinosaur Alley. Hatcher recovered hundreds of bones and teeth, although the remains were poorly preserved, disarticulated and often from animals who weren't fully grown. Later in 1888, Marsh named five new species of dinosaurs based on the remains uncovered by Hatcher's 1887-1887 expedition to the Arundel Clay deposits of Dinosaur Alley. They were the

ankylosaur Ankylosauria is a group of herbivorous dinosaurs of the order Ornithischia. It includes the great majority of dinosaurs with armor in the form of bony osteoderms, similar to turtles. Ankylosaurs were bulky quadrupeds, with short, powerful limbs. ...

'' Priconodon crassus'', the sauropods '' Pleurocoelus altus'' and '' Pleurocoelus nanus'', and the

theropods Theropoda (; ), whose members are known as theropods, is a dinosaur clade that is characterized by hollow bones and three toes and claws on each limb. Theropods are generally classed as a group of saurischian dinosaurs. They were ancestrally c ...

'' Allosaurus medius'' and '' Coelurus gracilis''. Although these remains are now regarded as Early Cretaceous, at the time Marsh thought them to be

Late Jurassic The Late Jurassic is the third epoch of the Jurassic Period, and it spans the geologic time from 163.5 ± 1.0 to 145.0 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic strata.Owen 1987. In European lithostratigraphy, the name ...

. In 1894, Arthur Bibbins was hired by the Woman's College of Baltimore (now known as

Goucher College Goucher College ( ') is a private liberal arts college in Towson, Maryland. It was chartered in 1885 by a conference in Baltimore led by namesake John F. Goucher and local leaders of the Methodist Episcopal Church.https://archive.org/details/h ...

) to teach

biology Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditary i ...

geology Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Ear ...

, and

curate A curate () is a person who is invested with the ''care'' or ''cure'' (''cura'') ''of souls'' of a parish. In this sense, "curate" means a parish priest; but in English-speaking countries the term ''curate'' is commonly used to describe clergy w ...

their

museum A museum ( ; plural museums or, rarely, musea) is a building or institution that cares for and displays a collection of artifacts and other objects of artistic, cultural, historical, or scientific importance. Many public museums make these ...

. Bibbins began collecting fossils from the Arundel Clay that year and demonstrated significant skill in finding the trunks of fossil cycads. During the summer of 1894, Bibbins learned that more dinosaur bones had been discovered locally both in the same iron mine Marsh had prospected and new localities. Bibbins began prospecting these sites and quickly amassed a sizable collection of dinosaur bones, although he described the excavation work as "attended by much difficulty". The only known

dinosaur footprints A fossil track or ichnite (Greek "''ιχνιον''" (''ichnion'') – a track, trace or footstep) is a fossilized footprint. This is a type of trace fossil. A fossil trackway is a sequence of fossil tracks left by a single organism. Over the year ...

in Maryland were discovered the next year in

1895 Events January–March * January 5 – Dreyfus affair: French officer Alfred Dreyfus is stripped of his army rank, and sentenced to life imprisonment on Devil's Island. * January 12 – The National Trust for Places of Histor ...

by James A. Mitchell in a Frederick County quarry north of

Emmitsburg Emmitsburg is a town in Frederick County, Maryland, United States, south of the Mason-Dixon line separating Maryland from Pennsylvania. Founded in 1785, Emmitsburg is the home of Mount St. Mary's University. The town has two Catholic pilgrima ...

. The prints were preserved in the rock of the Late Triassic Gettysburg Formation. In addition to discovering them he also illustrated them. Early in the twentieth century, Maryland was home to one of the most significant

mammal discoveries in American history. In 1912, workers digging in a cave for a railroad construction project about four miles west of

Cumberland Cumberland ( ) is a historic county in the far North West England. It covers part of the Lake District as well as the north Pennines and Solway Firth coast. Cumberland had an administrative function from the 12th century until 1974. From 19 ...

in Allegany County uncovered and incidentally destroyed many fossils in the course of their labor. However, eventually the scientific significance of the fossils was realized and paleontologist

J. W. Gidley James Williams Gidley (1866-1931) was an American paleontologist and museum curator.James W. Gi ...

conducted fieldwork at the cave between 1912 and 1915. In 1965 the collection of fossils belonging to Goucher College, for whom Arthur Bibbins had collected cycad and dinosaur fossils, were permanently loaned to the

National Museum of Natural History The National Museum of Natural History is a natural history museum administered by the Smithsonian Institution, located on the National Mall in Washington, D.C., United States. It has free admission and is open 364 days a year. In 2021, with 7 ...

at the Smithsonian. After J. W. Gidley's 1931 death, his son continued his father's work researching the fossils found in the Allegany County Cave. In 1938 the younger Gidley published a significant report on the subject in the scientific literature. The fossils obtained there are now curated by the Smithsonian Institution. By the time of the 1938 report more than 50 different kinds of animals had been identified among the fossils. This variety included many animal groups that would have seemed much more typical of significantly higher or lower latitudes. Most of the animals were relatively small and some Pleistocene life forms common in other parts of the country were strangely absent. In 1952, the first known

deposits of Maryland were documented in

. By early 1954 ten different species of

had been described from those deposits. Later, in 1966 researchers from the Carnegie Museum performed fieldwork at Scientists' Point on the Chesapeake Bay looking for invertebrate fossils. More recently, in

1998 1998 was designated as the ''International Year of the Ocean''. Events January * January 6 – The '' Lunar Prospector'' spacecraft is launched into orbit around the Moon, and later finds evidence for frozen water, in soil in permanently ...

, ''

'' was designated the

of Maryland.

People

R. S. Lull Richard Swann Lull (November 6, 1867 – April 22, 1957) was an American paleontologist and Sterling Professor at Yale University who is largely remembered now for championing a non-Darwinian view of evolution, whereby mutation(s) could unlo ...

was born in

Annapolis Annapolis ( ) is the capital city of the U.S. state of Maryland and the county seat of, and only incorporated city in, Anne Arundel County. Situated on the Chesapeake Bay at the mouth of the Severn River, south of Baltimore and about east o ...

on November 6,

1867 Events January–March * January 1 – The Covington–Cincinnati Suspension Bridge opens between Cincinnati, Ohio, and Covington, Kentucky, in the United States, becoming the longest single-span bridge in the world. It was renamed a ...

Natural history museums

Maryland Science Center The Maryland Science Center, located in Baltimore's Inner Harbor, opened to the public in 1976. It includes three levels of exhibits, a planetarium, and an observatory. It was one of the original structures that drove the revitalization of the ...

Baltimore Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...

* Natural History Society of Maryland, Baltimore *

Peale Museum The Peale, located in Baltimore, Maryland, is Baltimore's Community Museum. Its mission is to evolve the role of museums in society by providing local creators and storytellers with the space and support the need to realize a complete and accessi ...

Calvert Marine Museum The Calvert Marine Museum is a maritime museum located in Solomons, Maryland. The museum has three main themes: * regional paleontology, * estuarine life of the Patuxent River and Chesapeake Bay, * maritime history. Among its exhibits are the ...

, Solomons

Notable clubs and associations

* Maryland Geological Society * Calvert Marine Museum Fossil Club

Footnotes

References

* * Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63–69. * Mayor, Adrienne. ''Fossil Legends of the First Americans''. Princeton University Press. 2005. . * * Springer, Dale and Judy Scotchmoor. July 1, 2005.
Maryland, US

The Paleontology Portal
Accessed September 21, 2012. * Weishampel, D.B. & L. Young. 1996. Dinosaurs of the East Coast. The Johns Hopkins University Press.

External links

Geologic units in Maryland

Fossils in and around Maryland

{{Paleontology in the United States

Natural history of Maryland Science and technology in Maryland