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Leptomerycinae
Leptomerycinae is an extinct subfamily within the ruminant family Leptomerycidae. It contains four genera, ''Leptomeryx'', ''Pronodens'', ''Pseudoparablastomeryx,'' and ''Santuccimeryx'', which lived in North America during the Middle Eocene to Middle Miocene. The Leptomerycinae were primitive and ancient ruminants, resembling small deer, musk deer, or chevrotains. The first skull attributed to the genus ''Santuccimeryx,'' described as a potential link between ''Leptomeryx'' and ''Pseudoparablastomeryx,'' was discovered at Badlands National Park in 2016 by a park intern. The skull, initially assigned to ''Leptomeryx elissae,'' was collected from the park's Oligocene-age Brule Formation and is the most complete specimen of ''Leptomeryx elissae'' known to date. The presence of both dentary and skull material revealed significant differences from the ''Leptomeryx'' genus however, which prompted the taxonomical overhaul of the subfamily and led to ''L. elissae'' being reclassified int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptomeryx
''Leptomeryx'' is an extinct genus of ruminant of the family Leptomerycidae, endemic to North America during the Eocene through Oligocene 38–24.8 Mya, existing for approximately . It was a small deer-like ruminant with somewhat slender body. Fossil distribution Sites and species recovered: *Titus Canyon, Inyo County, California ''(L.blacki)'' ~30.6—33.9 Ma. *Anxiety Butte, Saskatchewan, Canada ''(L. sp., L. evansi)'' ~38—24.8 Ma. *Calf Creek, Saskatchewan, Canada, ''(L. mammifer)'' ~38—33.3 Ma. *Toadstool Park, Sioux County, Nebraska ''(L. speciosus)'' ~37.2—33.3 Ma. *Medicine Pole Hills, Bowman County, North Dakota Bowman County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 2,993, and was estimated to be 2,886 in 2024, The county seat and the largest city is Bowman. History The legislature of the Dakota Ter ... ''(L. yoderi)'' ~38—33.9 Ma. References * Webb, S.D., 1998. Hornless ruminants. pp. 463– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevrotain
Chevrotains, or mouse-deer, are small, even-toed ungulates that make up the family Tragulidae, and are the only living members of the infraorder Tragulina. The 10 extant species are placed in three genera, but several species also are known only from fossils. The extant species are found in forests in South and Southeast Asia; a single species, the water chevrotain, is found in the rainforests of Central and West Africa. In November 2019, conservation scientists announced that they had photographed silver-backed chevrotains (''Tragulus versicolor'') in a Vietnamese forest for the first time since the last confirmed sightings in 1990. They are solitary, or live in loose groupings or pairs, and feed almost exclusively on plant material. Chevrotains are the smallest hoofed mammals in the world. The Asian species weigh between , while the African chevrotain is considerably larger, at . With an average length of and an average height of , the Java mouse-deer is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
