Poebrotherium

Poebrotherium is an extinct genus of terrestrial herbivore the family Camelidae, endemic to North America from the Eocene through Oligocene 38—30.8 mya, existing for approximately 7.2 million years.

Discovery and history
Poebrotherium was first named by scientist Joseph Leidy in 1848, and its relationship to other White River fossils was later expanded by him in 1853.[2] Fur trapper Samuel Culbertson was working in Nebraska in pursuit of fur bearing mammals, and found a collection of strange fossil animal bones. He sent a box of these bones to his family back east, and not knowing what to make of them, they forwarded the remains to Leidy for identification.[3] Several animals' remains were included in this package, but one of the most interesting was that of a small mammal, about the size of a small deer or sheep. In addition to a partial skull, a portion of a forelimb was found. The portions that Leidy was able to examine helped him determine it was likely related to modern llamas, even though there was a paucity of new material available after his 1848 diagnosis.[4] This package spawned Leidy's interest in the White River badlands and its fauna, and he eventually sent collectors from the American Museum west to expand his collection. Between 1848 and 1853, cases of new material were shipping back to Leidy, but maddeningly only three more Poebrotherium tooth samples were among the remains recovered.

Etymology
Poebrotherium wilsoni (POE-bro-THEER-ee-um) can be translated to "Dr. Thomas Wilson's grass-eating beast". Poebrotherium chadronensis can be translated to "grass-eating beast from Chadron [formation]". Poebrotherium franki can be translated to "Frank's grass-eating beast".