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List Of Fossiliferous Stratigraphic Units In Delaware
This article contains a list of fossil-bearing stratigraphic units in the state of Delaware, U.S. Sites See also * Paleontology in Delaware References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Delaware Delaware Stratigraphic units A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, p ... Stratigraphy of Delaware Delaware geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratigraphic Units
A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, paleontologic features (facies) that characterize it. Units must be ''mappable'' and ''distinct'' from one another, but the contact need not be particularly distinct. For instance, a unit may be defined by terms such as "when the sandstone component exceeds 75%". Lithostratigraphic units Sequences of sedimentary rock, sedimentary and volcanic rocks are subdivided the basis of their shared or associated lithology. Formally identified lithostratigraphic units are structured in a hierarchy of lithostratigraphic rank, higher rank units generally comprising two or more units of lower rank. Going from smaller to larger in rank, the main lithostratigraphic ranks are Bed, Member, Formation, Group and Supergroup. Formal names of lithostratigraph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Delaware Bay, in turn named after Thomas West, 3rd Baron De La Warr, an English nobleman and Virginia's first colonial governor. Delaware occupies the northeastern portion of the Delmarva Peninsula and some islands and territory within the Delaware River. It is the second-smallest and sixth-least populous state, but also the sixth-most densely populated. Delaware's largest city is Wilmington, while the state capital is Dover, the second-largest city in the state. The state is divided into three counties, having the lowest number of counties of any state; from north to south, they are New Castle County, Kent County, and Sussex County. While the southern two counties have historically been predominantly agricultural, New Castle is more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calvert Formation
The Calvert Formation is a geologic formation in Maryland, Virginia, and Delaware. It preserves fossils dating back to the early to middle Miocene epoch of the Neogene period. The formation is a destination for amateur fossil hunters as well as professional paleontologists. It is one of the three formations which make up the Calvert Cliffs, all of which are part of the Chesapeake Group. Fossils The Calvert Formation is extremely fossiliferous. Some of the fossil species represented include the following: Sharks * ''Otodus megalodon'' * ''Otodus chubutensis'' * ''Carcharodon hastalis'' * '' Isurus oxyrhincus'' * '' Physogaleus contortus'' * '' Physogaleus hemmooriensis'' * ''Galeocerdo aduncus'' * '' Carcharhinus'' * ''Hemipristis serra'' * '' Squatina sp.'' * ''Squalus sp.'' * '' Echinorhinus blakei'' * '' Notorhyncus cepedianus'' * '' Hexanchus gigas'' * '' Carcharias'' * ''Carcharoides catticus'' * '' Isurus retroflexus'' * '' Parotodus benedeni'' * ''Alopias vulpinus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogene
The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). During this period, mammals and birds continued to evolve into modern forms, while other groups of life remained relatively unchanged. The first humans (''Homo habilis'') appeared in Africa near the end of the period. Some continental movements took place, the most significant event being the connection of North and South America at the Isthmus of Panama, late in the Pliocene. This cut off the warm ocean currents from the Pacific to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crosswicks Clay
The Crosswicks Clay is a geologic formation in Delaware. It preserves fossils dating back to the Cretaceous period. See also * List of fossiliferous stratigraphic units in Delaware This article contains a list of fossil-bearing stratigraphic units in the state of Delaware, U.S. Sites See also * Paleontology in Delaware References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Delaware Delaware Stratigraph ... * Paleontology in Delaware References * Cretaceous Delaware {{delaware-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now- extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Englishtown Formation
The Englishtown Formation is a geologic formation in Delaware. It preserves fossils dating back to the Cretaceous period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept .... See also * List of fossiliferous stratigraphic units in Delaware * Paleontology in Delaware References * Cretaceous Delaware {{delaware-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marshalltown Formation
The Marshalltown Formation is a Mesozoic geologic formation. 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. Dinosaurs known from the formation: * '' Hypsibema crassicauda'' * ''Hadrosaurus'' sp. * Nodosauridae indet. * ''Dryptosaurus'' sp. * Tyrannosauroidea indet. * Dromeosauridae indet. * Theropoda indet. See also * List of dinosaur-bearing rock formations ** List of stratigraphic units with few dinosaur genera This list of stratigraphic units with few non-avian dinosaur genera includes Mesozoic stratigraphic units of formation rank or higher that have produced dinosaur body fossils which have been referred to at most five genera. Since taxonomy frequent ... Footnotes References * Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. . Campanian Stage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matawan Formation
The Matawan Formation is a geologic formation in Maryland and New Jersey. It preserves fossils dating back to the Cretaceous period. A description of the formation in Maryland from the USGS ''Tolochester Folio'' (1917) follows: :The formation consists chiefly of glauconitic sand intimately mixed with dark-colored clay, but all through the material small flakes of mica are abundant. In some places the deposits consist almost entirely of black clay; in others, particularly where the upper beds are exposed, the arenaceous phase is predominant, and some beds consist entirely of sand ranging in color from white to dark greenish-black. Where the glauconite decomposes, the iron oxidizes and the materials are stained reddish-brown and in places are firmly indurated by the iron oxide. In places a small layer of gravel lies at the base of the formation. Small amounts of pyrite are occasionally seen. A prominent feature in several exposures of the Matawan formation in this quadrangle is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merchantville Formation
The Merchantville Formation is a geological formation in the northeastern United States whose strata date back to the Late Cretaceous, around the time of the Santonian and Campanian age. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. . Vertebrate fauna * Tyrannosauroidea ( Dryptosauridae) indet. (="Cryptotyrannus") * Hadrosauridae indet. (="Atlantohadros") * ''Hadrosaurus'' ''foulkii'' * '' Bothremys cooki'' * ''Mosasaurus'' sp. * Ornithomimidae indet. See also * List of dinosaur-bearing rock formations This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented. Containing body fossils * List of stratigraphic units with dinosaur body f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Laurel Formation
The Mount Laurel Formation is a Mesozoic geologic formation located in New Jersey and Delaware. 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. Dinosaur teeth recovered from this formation include tyrannosauroid teeth similar to those of ''Dryptosaurus'', as well as teeth from a ~3-4m saurornitholestine dromaeosaurid.Brownstein, C.D. (2019)New records of theropods from the latest Cretaceous of New Jersey and the Maastrichtian Appalachian fauna.''Royal Society Open Science'', 6(11): 191206 Other fossils include: Belemnites in the genus Belemnitella, Oysters such as Exogyra and Pycnodonte, and rare mosasaur, turtle, and plesiosaur remains. See also * List of dinosaur-bearing rock formations ** List of stratigraphic units with few dinosaur genera This list of stratigraphic units with few non-avian dinosaur genera includes Mesozoic stratigraphic uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontology In Delaware
The location of the state of Delaware Paleontology in Delaware refers to paleontological research occurring within or conducted by people from the U.S. state of Delaware. There are no local rocks of Precambrian, Paleozoic, Triassic, or Jurassic age, so Delaware's fossil record does not begin until the Cretaceous period. As the Early Cretaceous gave way to the Late Cretaceous, Delaware was being gradually submerged by the sea. Local marine life included cephalopods like ''Belemnitella americana'', and marine reptiles. The dwindling local terrestrial environments were home to a variety of plants, dinosaurs, and pterosaurs. Along with New Jersey, Delaware is one of the best sources of Late Cretaceous dinosaur fossils in the eastern United States. Delaware was still mostly covered by sea water through the Cenozoic era. Local marine life included manatees, porpoises, seals, and whales. Delaware was worked over by glaciers during the Ice Age. The Cretaceous belemnite ''Belemnitella ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
