Category
page 1Paleontology in Utah

Uintatherium
Uintatherium is an extinct genus of dinoceratan mammal that lived during the Eocene epoch. Two species are currently recognized: U. anceps is found in the United States and lived during the early to middle Eocene (50.5–37 million years ago), while U. insperatus is found in China and lived during the middle and late Eocene (48–37 million years ago). The first fossils of Uintatherium were recovered from the Fort Bridger Basin and were initially believed to belong to a new species of brontothere. Several previously recognized species, as well as genera such as Edward Drinker Cope's Loxolophodon a
Dinosaur National Monument
national monument in Uintah County, Utah and Moffat County, Colorado in the United States
.jpg)
Notharctus
Notharctus is a genus of adapiform primate that lived in North America and Europe during the early to middle Eocene.
left|thumb|N. tenebrosus (left) compared to Plesiadapis|Plesiadapis cookei (right), a plesiadapiform. Both come from [[Eocene Wyoming, though the latter is slightly geologically older (Museum of Natural Sciences, Brussels).]]
The body form of Notharctus is similar to that of modern rats. Its fingers were elongated for clamping onto branches, including the development of a thumb. Its spine is flexible and the animal was about in length, excluding the long tail.
Green River Formation
Rock formation
Navajo Sandstone
geological formation
Palmulasaurus
Palmulasaurus is a genus of polycotylid plesiosaur from the Turonian Tropic Shale of Utah. It was originally described as Palmula, but that name was already occupied by a genus of Cretaceous foraminifera first described in 1833.
Smilodectes
Smilodectes is a genus of adapiform primate that lived in North America during the middle Eocene. It possesses a post-orbital bar and grasping thumbs and toes. Smilodectes has a small cranium size and the foramen magnum was located at the back of the skull, on the occipital bone.
Cedar Mountain Formation
geological formation in the western United States
Kaiparowits Formation
geological formation in the United States
Diplacodon
Diplacodon ("double-pointed tooth") is an extinct genus of brontothere. Diplacodon fossils have been found in North America and date to the Middle Eocene, during the Uintan land mammal age. Two Diplacodon species are recognized, the type species D. elatus from the Uinta Formation and the larger D. gigan from the Wiggins Formation.
Utetitan
Utetitan (meaning "Ute giant") is an extinct genus of titanosaurian sauropod dinosaur from the Late Cretaceous of North America. The genus contains a single species, Utetitan zellaguymondeweyae, known from partial skeletons previously assigned to Alamosaurus. Fossils assigned to this species have been found in the North Horn Formation of Utah, and the Black Peaks and Javelina formations of Texas, United States.
Spheroolithus
Spheroolithus is an oogenus of dinosaur egg.
Uintaceras
Uintaceras is an extinct genus of medium-sized early rhinocerotoids that lived in North America (Wyoming and Utah) during the Middle Eocene, with only the type species U. radinskyi, named in 1997, currently contained within the genus. Traditionally considered the oldest and most primitive species of the Rhinocerotidae, it may instead have been a close relative of the Asian Paraceratheriidae. The dubious species Forstercooperia (Hyrachyus) grandis (Radinsky, 1967; Peterson, 1919) is also possibly the same animal as Uintaceras, although the Asian material of F. grandis was assignable to Forsterc
Escalante Petrified Forest State Park
State park in Utah, United States