Protitanotherium is a genus of brontotheres native to North America during the middle Eocene. It contains one species, P. emarginatum, described in 1895 by the American paleontologist John Bell Hatcher.
Protitanotherium is a genus of brontotheres native to North America during the middle Eocene. It contains one species, P. emarginatum, described in 1895 by the American paleontologist John Bell Hatcher.
==Discovery and naming== In 1895, John Bell Hatcher described a partial cranial material from the Uinta Formation of Utah, YPM-PU 11242, as the holotype of a new species of brontothere. He tentatively included the taxon as a species of Diplacodon (D. emarginatum), but he noted that "should future discoveries show that there are hornless forms with same dental characters as Diplacodon", it would require a new genus name Protitanotherium.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).