Search results
Results from the WOW.Com Content Network
The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. [9]
Oligocene: This species of camel took the place of deer and antelope in the White River Badlands. Procamelus: Miocene: Ancestor of extinct Titanolypus and modern Camelus: Protylopus: Late Eocene: Earliest member of the camelids Stenomylus: Early Miocene: Small, gazelle-like camel that lived in large herds on the Great Plains Stevenscamelus [24 ...
Camelops is an extinct genus of camel that lived in North and Central America from the middle Pliocene (from around 4-3.2 million years ago) to the end of the Pleistocene (around 13-12,000 years ago). It is more closely related to living camels than to lamines (llamas, alpacas, vicuñas, and guanacos), making it a true camel of the Camelini tribe.
By the Oligocene, camels were the size of sheep and had only two toes. [144] Gradually over time horses also lost toes, but unlike camels, horses' were reduced to a single digit. [145] By the Oligocene their teeth had adapted to endure abrasion from silica in their increasingly grassy diets. [145] Horses gradually became common throughout the ...
Rhinoceroses remained and were a prominent member of Oligocene Nebraska's fauna. Camels were a new arrival to Nebraska during the Oligocene. The earliest known example was Poebrotherium. [1]: 189 The Oligocene wildlife of Scotts Bluff National Monument left behind footprints that would later fossilize in the sediments of the Arikaree beds.
Poebrotherium looked more like modern camels than its predecessor Protylopus, but at 90 centimetres (3.0 ft) in height, it was roughly the size of a modern sheep. Its skull resembled that of a modern llama , while its limbs ended in hooved toes and were more built for speed than the feet of Protylopus .
Camels got better at closing their noses to keep out sand and lock in moisture. They learned to drink saltwater, eat toxic plants and position their bodies in the coolest possible angles to the sun.
Poebrotherium in the Oligocene A diagram shows Poebrotherium in Oligocene [6] A diagram shows Poebrotherium in middle Oligocene [7] "The osteology of the skull of Poëbrotherium has been given...the specimen, a nearly complete skull, jaws, and atlas, found near Harrison, Nebraska, comes from the Oligocene." [8] Oxydactylus in the [Lower] Miocene