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Archaeopotamus is an extinct genus of Hippopotamidae that lived between 7.5 and 2.58 million years ago in Africa and the Middle East. The genus was described in 2005 to encompass species of hippos that were previously grouped in Hexaprotodon. Archaeopotamus means "the ancient of the river". Of all identified hippos, only Kenyapotamus is older.
The largest known marsupial, and the largest metatherian, is the extinct Diprotodon, about 3 m (9.8 ft) long, standing 2 m (6 ft 7 in) tall and weighing up to 2,786 kg (6,142 lb). [48] Fellow vombatiform Palorchestes azael was similar in length being around 2.5 m (8.2 ft), with body mass estimates indicating it could exceed 1,000 kg (2,200 lb).
Pages in category "Extinct hippopotamuses" The following 15 pages are in this category, out of 15 total. This list may not reflect recent changes. A. Archaeopotamus; C.
Hippopotamus gorgops is an extinct species of the genus Hippopotamus known from remains found in Northern Africa, Eastern Africa, and the Levant.One of the largest hippopotamus species, it first appeared during the late Pliocene-Early Pleistocene, and became extinct during the early Middle Pleistocene.
List of prehistoric chitons; List of prehistoric foraminifera genera; List of ichthyosaur genera; List of marine gastropod genera in the fossil record; List of plesiosaur genera; List of prehistoric malacostracans; List of prehistoric medusozoan genera; List of prehistoric nautiloid genera; List of prehistoric ostracod genera; List of ...
The hippopotamus (Hippopotamus amphibius) (/ ˌ h ɪ p ə ˈ p ɒ t ə m ə s /; pl.: hippopotamuses; often shortened to hippo (pl.: hippos), further qualified as the common hippopotamus, Nile hippopotamus and river hippopotamus, is a large semiaquatic mammal native to sub-Saharan Africa.
The prehistoric Australian megalania (Varanus priscus), which may have existed up to 40,000 years ago, is the largest terrestrial lizard known to exist, but the lack of a complete skeleton has resulted in a wide range of size estimates. Molnar's 2004 assessment resulted in an average weight of 320 kg (710 lb) and length of 4.5 m (15 ft), and a ...
H. antiquus is suggested to be closely related to the African species Hippopotamus gorgops, and may be a descendant of that species. [10] The oldest records of H. antiquus date to the Early Pleistocene, around 2.1-2 million years ago, which are found in Italy and Greece. [11]