|
List Of Appalachian Dinosaurs
This is a list of dinosaurs whose remains have been recovered from Appalachia. During the Late Cretaceous period, the Western Interior Seaway divided the continent of North America into two landmasses; one in the west named Laramidia and Appalachia in the east. Since they were separated from each other, the dinosaur faunas on each of them were very different. For example, nodosaurs were common in Appalachia, but they were rare in Laramidia, and there were only specialized forms, such as '' Edmontonia'' and '' Panoplosaurus''. This is an example of how isolated faunas develop differently. List of Appalachian dinosaurs References {{DEFAULTSORT:Appalachian Dinosaurs, List Of Dinosaurs 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 ... . Lists of animals of the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appalachia (Mesozoic)
During most of the Late Cretaceous (100.5 to 66 million years ago) the eastern half of North America formed Appalachia (named for the Appalachian Mountains), an island land mass separated from Laramidia to the west by the Western Interior Seaway. This seaway had split North America into two massive landmasses due to a multitude of factors such as tectonism and sea-level fluctuations for nearly 40 million years. The seaway eventually expanded, divided across the Dakotas, and by the end of the Cretaceous, it retreated towards the Gulf of Mexico and the Hudson Bay. This left the island masses joined in the continent of North America as the Rocky Mountains rose. From the Cenomanian to the end of the Campanian ages of the Late Cretaceous, Appalachia was separated from the rest of North America. As the Western Interior Seaway retreated in the Maastrichtian, Laramidia and Appalachia eventually connected. Because of this, its fauna was isolated, and developed very differently from the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diplotomodon
''Diplotomodon'' (meaning "double cutting tooth") is a dubious genus of theropod dinosaur, from New Jersey. It was possibly a member of the Tyrannosauroidea, the clade that also contains ''Tyrannosaurus''. ''Diplotomodon'' is only known from a single tooth, holotype ANSP 9680, found near Mullica Hill in either the Navesink or Hornerstown Formation, marine deposits dating to the Maastrichtian stage of the late Cretaceous period. Joseph Leidy originally described the tooth using the name ''Tomodon'' in 1865, considering it a carnivorous marine reptile, probably a plesiosaur. The generic name was derived from Greek τομός (''tomos''), "cutting", "sharp", and ὀδών (''odon''), "tooth". However, this name had already been used for the snake genus '' Tomodon'' Duméril 1853 and Leidy changed it in 1868 to ''Diplotomodon'', adding a Greek διπλόος (''diploos''), "double", at that time suggesting it was a fish. The type species, ''Diplotomodon'' ''Tomodon''''horrificus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Priconodon
''Priconodon'' (meaning "saw cone tooth") is an extinct genus of dinosaur (perhaps nodosaurid), known from its large teeth. Its remains have been found in the Aptian-Albian age Lower Cretaceous Arundel Formation of Muirkirk, Prince George's County, Maryland, USA and the Potomac Group, also located in Maryland. History O. C. Marsh named the genus for USNM 2135, a large worn tooth from what was then called the Potomac Formation. As ankylosaurians were by and large unknown at the time, he compared it to ''Diracodon'' (=''Stegosaurus'') teeth.Marsh, O.C. (1888). Notice of a new genus of Sauropoda and other new dinosaurs from the Potomac Formation. ''American Journal of Science'' 135:89-94. It was not identified as an ankylosaurian until Walter Coombs assigned it to Nodosauridae in 1978.Coombs, Jr., W.P. (1978). The families of the ornithischian dinosaur order Ankylosauria. ''Palaeontology'' 21(1):143-170. In 1998 Kenneth Carpenter and James Kirkland, in a review of North Amer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pawpawsaurus
''Pawpawsaurus'', meaning "Pawpaw Lizard", is a nodosaurid ankylosaur from the Cretaceous (late Albian) of Tarrant County, Texas, discovered in May 1992. The only species yet assigned to this taxon, ''Pawpawsaurus campbelli,'' is based on a complete skull (lacking mandibles) from the marine Paw Paw Formation (Wachita Group). Discovery ''Pawpawsaurus'' was found in the Paw Paw Formation in Tarrant County, Texas, in May 1992, by Cameron Campbell. A complete skull is the only specimen, from which the binomial was named ''Pawpawsaurus campbelli''. The Paw Paw Formation has produced another nodosaurid, '' Texasetes pleurohalio'' (Coombs, 1995), which may prove to be a senior synonym of ''Pawpawsaurus''. This is the only nodosaurid known to have possessed the bony eyelids commonly found in ankylosaurids. The skull of ''Pawpawsaurus'' bears some notable similarities to that of '' Silvisaurus'', such as the presence of teeth in the premaxilla and the restriction of the osseous s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missouri
Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee): Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas to the south and Oklahoma, Kansas and Nebraska to the west. In the south are the Ozarks, a forested highland, providing timber, minerals, and recreation. The Missouri River, after which the state is named, flows through the center into the Mississippi River, which makes up the eastern border. With more than six million residents, it is the List of U.S. states and territories by population, 19th-most populous state of the country. The largest urban areas are St. Louis, Kansas City, Missouri, Kansas City, Springfield, Missouri, Springfield and Columbia, Missouri, Columbia; the Capital city, capital is Jefferson City, Missouri, Jefferson City. Humans have inhabited w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parrosaurus
''Hypsibema missouriensis'' (; originally ''Neosaurus missouriensis'', first renamed to ''Parrosaurus missouriensis'', also spelled ''Hypsibema missouriense'') is a species of plant-eating dinosaur in the genus ''Hypsibema'', and the state dinosaur of the U.S. state Missouri. One of the few official state dinosaurs, bones of the species were discovered in 1942, at what later became known as the Chronister Dinosaur Site near Glen Allen, Missouri. The remains of ''Hypsibema missouriensis'' at the site, which marked the first known discovery of dinosaur remains in Missouri, are the only ones to have ever been found. Although first thought to be a sauropod, later study determined that it was a hadrosaur, or "duck-billed" dinosaur, whose snouts bear likeness to ducks' bills. Some of the species' bones found at the Chronister Dinosaur Site are housed in Washington, D.C.'s Smithsonian Institution. Characteristics The species is estimated to have had around 1,000 small teeth, weighed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithotarsus
''Ornithotarsus'' () is a genus of hadrosaurid ornithopod dinosaurs that lived in North America during the Late Cretaceous Period in what is now the Merchantville Formation about 84 million to 78 million years ago. Taxonomy ''Ornithotarsus immanis'' was described in 1869 on the basis of YPM 3221, a fragmentary hindlimb comprising a distal tibia and fibula as well as ankle bones unearthed from the Merchantville Formation of Raritan Bay of New Jersey. Although subsequently treated as a synonym of ''Hadrosaurus ''Hadrosaurus'' (; ) is a genus of hadrosaurid ornithopod dinosaurs that lived in North America during the Late Cretaceous Period in what is now the Woodbury Formation about 80 million to 78 million years ago. The holotype specimen was found in f ...'', Prieto-Marquez et al. (2006) found ''Ornithotarsus'' to share no diagnostic traits with the ''H. foulkii'' holotype and declared it a ''nomen dubium'' undetermined beyond Hadrosauridae, and Brownstein (2021) agreed with this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niobrarasaurus
''Niobrarasaurus'' (meaning "Niobrara lizard") is an extinct genus of nodosaurid ankylosaur which lived during the Cretaceous 87 to 82 million years ago. Its fossils were found in the Smoky Hill Chalk Member of the Niobrara Formation, in western Kansas, which would have been near the middle of Western Interior Sea during the Late Cretaceous. It was a nodosaurid, an ankylosaur without a clubbed tail. It was closely related to ''Nodosaurus''. The type species, ''Niobrarasaurus coleii'', was discovered and collected in 1930 by a geologist named Virgil Cole. It was originally described by Mehl in 1936 and named ''Hierosaurus coleii''. It was then re-described as a new genus by Carpenter ''et al.'' in 1995. In 2002 the type specimen was transferred to the Sternberg Museum of Natural History, Hays, Kansas. It has been estimated to be 5 meters (16 feet) in length and around 227-453 kg (500-1.000 lbs) according to Thomas Holtz. Paul gave a higher estimation of 6.5 meters (21.3 ft) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lophorhothon
''Lophorhothon'' is a genus of hadrosauroid dinosaur from the Late Cretaceous, the first genus of dinosaur discovered in Alabama, in the United States. Discovery and naming Remains of this small, poorly known perhaps saurolophine dinosaur were first discovered during the 1940s, from extensive erosional outcrops of the lower unnamed member of the Mooreville Chalk Formation (Selma Group; lower and middle Campanian) in Dallas County, west of the town of Selma, Alabama. The taxon has since also been reported from Black Creek Formation (Campanian) of North Carolina. The holotype, which is housed in the collections of the Field Museum in Chicago, consists of a fragmentary and disarticulated skull and incomplete postcranial skeleton. The length on the holotype specimen has been estimated as . The genus was named by Wann Langston in 1960. It was thought to be the only species of hadrosaur from that fossil formation, until 2016 with the discovery of the primitive hadrosaur, '' Eotr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypsibema Missouriensis
''Hypsibema missouriensis'' (; originally ''Neosaurus missouriensis'', first renamed to ''Parrosaurus missouriensis'', also spelled ''Hypsibema missouriense'') is a species of plant-eating dinosaur in the genus '' Hypsibema'', and the state dinosaur of the U.S. state Missouri. One of the few official state dinosaurs, bones of the species were discovered in 1942, at what later became known as the Chronister Dinosaur Site near Glen Allen, Missouri. The remains of ''Hypsibema missouriensis'' at the site, which marked the first known discovery of dinosaur remains in Missouri, are the only ones to have ever been found. Although first thought to be a sauropod, later study determined that it was a hadrosaur, or "duck-billed" dinosaur, whose snouts bear likeness to ducks' bills. Some of the species' bones found at the Chronister Dinosaur Site are housed in Washington, D.C.'s Smithsonian Institution. Discovery and naming Remains of ''Hypsibema missouriensis'' were first discovered in B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypsibema
''Hypsibema'' is a little-known genus of dinosaur from the Late Cretaceous (Campanian stage, around 75 million years ago). Its giant fossils were found in the U.S. states of North Carolina and possibly Missouri. It is believed to be a hadrosauroid, although the Missouri remains were first thought to belong to a small sauropod ("Neosaurus", renamed ''Parrosaurus''). The type species, ''Hypsibema crassicauda'', was described by Edward Drinker Cope, and was found in Sampson County, North Carolina in 1869. The generic name is derived from Greek υψι/''hypsi'', "high", and βεμα/''bema'', "step", as Cope believed that the species walked particularly erect on its toes. The specific name means "with a fat tail" in Latin. The syntypic series, USNM 7189, originally consisted of a caudal vertebra, a metatarsal, and two femoral fragments that were originally identified as humeral and tibial fragments, all found in 1869 by North Carolina state geologist professor Washington Carruthers K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hierosaurus
''Hierosaurus'' (meaning "sacred lizard") is an extinct genus of nodosaurid ankylosaur which lived during the Late Cretaceous 87 to 82 million years ago. Its fossils were found in the Smoky Hill Chalk Member of the Niobrara Formation, in western Kansas, which would have been near the middle of the Western Interior Sea during the Late Cretaceous. It was a nodosaurid, an ankylosaur without a clubbed tail. The only species of this genus, ''Hierosaurus sternbergii'', was described by George Wieland on the basis of cranial and postcranial osteoderms collected by Charles Hazelius Sternberg in the Niobrara Formation of western Kansas. Nowadays, ''Hierosaurus'' is considered a ''nomen dubium'', and a second species, ''H. coleii'', was reassigned to the new genus ''Niobrarasaurus'' in 1995.M. K. Vickaryous, T. Maryanska, and D. B. Weishampel. 2004. Ankylosauria. In D. B. Weishampel, P. Dodson, and H. Osmolska (eds.), The Dinosauria (second edition). University of California Press, Berk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
