| Trihamus | |
|---|---|
Trace fossil classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Ichnogenus: | † Trihamus Hitchcock, 1862 |
Trihamus is an ichnogenus of (probably bipedal) [1] dinosaur footprint.
| Trihamus | |
|---|---|
| Trace fossil classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Ichnogenus: | † Trihamus Hitchcock, 1862 |
Trihamus is an ichnogenus of (probably bipedal) [1] dinosaur footprint.
Anchisaurus is a genus of basal sauropodomorph dinosaur. It lived during the Early Jurassic Period, and its fossils have been found in the red sandstone of the Portland Formation, Northeastern United States, which was deposited from the Hettangian age into the Sinemurian age, between about 200 and 195 million years ago. Until recently it was classed as a member of Prosauropoda. The genus name Anchisaurus comes from the Greek αγχιanchi-; "near, close" + Greek σαυρος ; "lizard". Anchisaurus was coined as a replacement name for "Amphisaurus", which was itself a replacement name for Hitchcock's "Megadactylus", both of which had already been used for other animals.
Segisaurus is a genus of small coelophysid theropod dinosaur, that measured approximately 1 metre in length. The only known specimen was discovered in early Jurassic strata in Tsegi Canyon, Arizona, for which it was named. Segisaurus is the only dinosaur to have ever been excavated from the area.
Sinosaurus is an extinct genus of theropod dinosaur which lived during the Early Jurassic Period. It was a bipedal carnivore approximately 5.5 metres (18 ft) in length and 300 kilograms (660 lb) in body mass. Fossils of the animal were found at the Lufeng Formation, in the Yunnan Province of China.
Hexinlusaurus is a genus of basal ornithischian dinosaur from the Middle Jurassic of China.
Spinosuchus is an extinct genus of trilophosaurid allokotosaur from the Late Triassic of Texas, southern United States. It has been assigned to a variety of groups over its history, from coelophysid dinosaur to pseudosuchian to uncertain theropod dinosaur and to Proterosuchidae. This uncertainty is not unusual, given that it was only known from a poorly preserved, wall-mounted, partial vertebral column of an animal that lived in a time of diverse, poorly known reptile groups. However, newly collected material and recent phylogenetic studies of early archosauromorphs suggest that it represents an advanced trilophosaurid very closely related to Trilophosaurus.
Camptosaurichnus is an ichnogenus of footprint found in Colchagua (Chile), belonging to an Ornithopod dinosaur. It was from the Tithonian age of the Jurassic.
Caririchnium is an ichnogenus of ornithopod dinosaur footprint, belonging to either derived iguanodonts or basal hadrosauroids. It includes the species Caririchnium lotus from Lower Cretaceous Jiaguan Formation and C. protohadrosaurichnos from Upper Cretaceous Woodbine Formation. Specimens are also known from the Lower Cretaceous El Castellar Formation and Camarillas Formations.
Dakotasaurus is an ichnogenus of dinosaur footprint.
Hadrosaurichnus is an ichnogenus of dinosaur footprint.
Ichnites is an ichnogenus of dinosaur footprint.
Iguanodontipus is an ichnogenus of dinosaur footprint.
Magnoavipes is an ichnogenus of dinosaur footprint.
Orcauichnites is an ichnogenus of dinosaur footprint.
Ornithopodichnites is an ichnogenus of dinosaur footprint.
Shiraminesauropus is an ichnogenus of dinosaur footprint.
Sousaichnium is an ichnogenus of dinosaur footprint.
Staurichnium is an ichnogenus of dinosaur footprint.
Tetrapodosaurus is an ichnogenus of dinosaur footprint.
Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the U.S. state of Arkansas. The fossil record of Arkansas spans from the Ordovician to the Eocene. Nearly all of the state's fossils have come from ancient invertebrate life. During the early Paleozoic, much of Arkansas was covered by seawater. This sea would come to be home to creatures including Archimedes, brachiopods, and conodonts. This sea would begin its withdrawal during the Carboniferous, and by the Permian the entire state was dry land. Terrestrial conditions continued into the Triassic, but during the Jurassic, another sea encroached into the state's southern half. During the Cretaceous the state was still covered by seawater and home to marine invertebrates such as Belemnitella. On land the state was home to long necked sauropod dinosaurs, who left behind footprints and ostrich dinosaurs such as Arkansaurus.
Glut, Donald F. (2003). "Appendix: Dinosaur Tracks and Eggs" . Dinosaurs: The Encyclopedia. 3rd Supplement. Jefferson, North Carolina: McFarland & Company, Inc. pp. 613–652. ISBN 0-7864-1166-X.
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