List of Appalachian dinosaurs
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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
| Name | Period | Diet | Notes | Image |
|---|---|---|---|---|
| Acrocanthosaurus | Lower Cretaceous | carnivore | A large carcharodontosaur from Texas and Oklahoma. Possible teeth known from Maryland. | File:Acrocanthosaurus.jpg |
| Ampelognathus | Upper Cretaceous | herbivore | A small ornithopod from Texas. | File:Ampelognathus holotype.jpg |
| Appalachiosaurus | Upper Cretaceous | carnivore | Large tyrannosauroid from Alabama. | File:Appalachiosaurus.jpg |
| Arkansaurus | Lower Cretaceous | omnivore | Early ornithomimid from Arkansas. | File:Arkansaurus NT.jpg |
| Astrodon | Lower Cretaceous | herbivore | Large herbivorous sauropod found in Maryland. | File:Astrodon johnstoni.jpg |
| Astrophocaudia | Lower Cretaceous | herbivore | Large herbivorous sauropod found in Texas. | File:Astrophocaudia LM.png |
| Cedarosaurus | Lower Cretaceous | herbivore | Large herbivorous sauropod found in the Trinity Group of Texas. | File:Cedarosaurus parts.jpg |
| Claosaurus | Upper Cretaceous | herbivore | Primitive hadrosauromorph. Its only known fossil specimen found appeared to have been washed into the Western Interior Seaway. It is believed to be from Appalachia because it was found closer to the Appalachia side of the sea and is unknown from Laramidia. | File:Claosaurus.png |
| "Coelosaurus" | Upper Cretaceous | omnivore | May be synonymous with Ornithomimus. Its remains have been found New Jersey. | File:Coelosaurus antiquus tibia.jpg |
| Convolosaurus | Lower Cretaceous | herbivore | A small ornithopod that was endemic to Texas. | File:Convolosaurus in Perot Museum.png |
| Deinonychus | Lower Cretaceous | carnivore | A dromaeosaur whose remains have been found in Oklahoma. Possible teeth found in Maryland. | File:Deinonychus skull ROM.jpg |
| Diplotomodon | Upper Cretaceous | carnivore | Dubious name for a species of tyrannosauroid from New Jersey, possibly a Dryptosaurus or a potentially new genus. | File:Diplotomodon.jpg |
| Dryptosaurus | Upper Cretaceous | carnivore | Medium-sized tyrannosauroid from New Jersey. It was the first theropod unearthed in North America. | File:Dryptosaurus remains 01.png |
| Eotrachodon | Upper Cretaceous | herbivore | Hadrosaur from Alabama known from a nearly complete skeleton. | File:Eotrachodon NT small.jpg |
| Hadrosaurus | Upper Cretaceous | herbivore | First known non-avian dinosaur skeleton from the United States. Discovered in 1858 in Haddonfield, New Jersey. | File:Hadrosaurus remains.jpg |
| Hierosaurus | Upper Cretaceous | herbivore | A dubious genus of nodosaur unearthed in Kansas. | File:Hierosaurus spine.jpg |
| Hypsibema | Upper Cretaceous | herbivore | Little known hadrosaur first discovered in North Carolina in 1869. Better material of a second species was found in Missouri. | |
| Lophorhothon | Upper Cretaceous | herbivore | Hadrosauromorph from Alabama with skull fragments discovered. In 2021, a more complete skeleton was unearthed.[1] | File:Lophorhothon atopus.jpg |
| Niobrarasaurus | Upper Cretaceous | herbivore | Another example of a nodosaurid dinosaur from Kansas. | |
| Ornithotarsus | Upper Cretaceous | herbivore | Junior synonym of Hadrosaurus. | |
| Parrosaurus | Upper Cretaceous | herbivore | Hadrosaur from Missouri. May possibly represent Junior synonym of Hypsibema missouriensis. Is the state dinosaur of Missouri. | |
| Pawpawsaurus | Lower Cretaceous | herbivore | Nodosaur that was unearthed in Texas. | |
| Priconodon | Lower Cretaceous | herbivore | Nodosaur from Maryland found only from fossilized teeth. | File:Priconodon.jpg |
| Protohadros | Lower Cretaceous | herbivore | Hadrosaur from eastern Texas, which was a part of Appalachia during the formation of the Western Interior Seaway. | |
| Propanoplosaurus | Lower Cretaceous | herbivore | Nodosaurid dinosaur from Maryland. | |
| Silvisaurus | Upper Cretaceous | herbivore | Herbivorous nodosaur from the state of Kansas. Like Claosaurus, the specimen found was probably washed into the Western Interior Seaway. It is believed to be from Appalachia because it was found closer to the Appalachia side of the sea. | File:Silvisaurus skull.jpg |
| Saurornitholestes | Upper Cretaceous | carnivore | A dromaeosaur endemic to Laramidia that possibly made its way to Appalachia via island hopping. Possible teeth have been found in Alabama, North Carolina and South Carolina. | File:Saurornitholestes MOR1.jpg |
| Sauroposeidon | Lower Cretaceous | herbivore | A massive sauropod whose remains have been unearthed in Texas and Oklahoma. | File:Sauroposeidon proteles (flipped).jpg |
| Teihivenator | Upper Cretaceous | carnivore | A dubious species of tyrannosaur that was unearthed in New Jersey. | File:Laelaps macropus tibia.jpg |
| Texasetes | Lower Cretaceous | herbivore | Another nodosaur from Texas. | File:NMNH-USNM337987 1.jpg |
| Tenontosaurus | Lower Cretaceous | herbivore | An iguanodontid whose remains have been found in Texas, Oklahoma and Maryland.[2][3] [citation needed] | File:Tenontosaurus BW transparent.png |
| Zephyrosaurus | Lower Cretaceous | herbivore | A small ornithopod endemic to Laramidia. Possible tracks have been discovered in Maryland and Virginia. | File:Zephyrosaurus in Copenhagen.jpg |
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References
- ↑ Gates, Terry; Lamb, James (January 11, 2021). "Redescription of Lophorhothon atopus (Ornithopoda: Dinosauria) from the Late Cretaceous of Alabama based on new material". Canadian Journal of Earth Sciences. doi:10.1139/cjes-2020-0173. Retrieved March 25, 2021.
- ↑ Winkler, Dale A.; Murry, Phillip A.; Jacobs, Louis L. (June 19, 1997). "A New Species of Tenontosaurus (Dinosauria: Ornithopoda) from the Early Cretaceous of Texas". Journal of Vertebrate Paleontology. 17 (2). Taylor & Francis, Ltd.: 330–348. Retrieved 24 March 2021.
- ↑ Wilford, John Noble (February 27, 2001). "At Last, Scientists Find Bones From a Tenontosaurus That Didn't Lose Its Head". The New York Times. Retrieved 24 March 2021.
