Search results
Results from the WOW.Com Content Network
Brontotheriidae is a family of extinct mammals belonging to the order Perissodactyla, the order that includes horses, rhinoceroses, and tapirs.Superficially, they looked rather like rhinos with some developing bony nose horns, and were some of the earliest mammals to have evolved large body sizes of several tonnes.
Rhinos and tapirs are more closely related to each other than to horses. The separation of horses from other perissodactyls took place according to molecular genetic analysis in the Paleocene some 56 million years ago, while the rhinos and tapirs split off in the lower-middle Eocene, about 47 million years ago.
Perissodactyls range in size from the 1.8 m (6 ft) long Baird's tapir to the 4 m (13 ft) long white rhinoceros. Over 50 million domesticated donkeys and 58 million horses are used in farming worldwide, while four species of perissodactyl have potentially fewer than 200 members remaining.
A rhinoceros (/ r aɪ ˈ n ɒ s ər ə s / ry-NOSS-ə-rəss; from Ancient Greek ῥινόκερως (rhinókerōs) 'nose-horned'; from ῥίς (rhis) 'nose' and κέρας (kéras) 'horn'; [1] pl.: rhinoceros or rhinoceroses), commonly abbreviated to rhino, is a member of any of the five extant species (or numerous extinct species) of odd-toed ungulates (perissodactyls) in the family ...
Brontotheres, tapirs, and rhinos evolve. c. 49 Ma – Whales return to the water. c. 45 Ma – Camels evolve in North America. c. 40 Ma – Age of the Catarrhini parvorder; first canines evolve. Lepidopteran insects become recognizable. Gastornis goes extinct. Basilosaurus evolves. c. 37 Ma – First Nimravids.
Malayan tapir, a first species of tapir to be discovered, is described. 1824. Publication of the French physician Henri Dutrochet's Mémoires pour servir a l'histoire anatomique et physiologique des végétaux et des animaux setting forth a physiological theory of the cell. 1824.
Jurassic World invented the Indominous rex dinosaur and the whole planet seems thrilled they did. So what real dinosaur did the movie-makers use to design I-rex? Check out Therizinosaurus.
List of timelines around the world. Logarithmic timeline shows all history on one page in ten lines. Orders of magnitude (time) Periodization for a discussion of the tendency to try to fit history into non-overlapping periods. Time. Planck Time