Diplacodon

{{Short description|Extinct genus of mammals}}

{{Expand German|date=March 2024}}{{Automatic taxobox

| fossil_range =

| image = Pseudodiplacodon progressum.jpg

| image_caption = D. progressum

| taxon = Diplacodon

| authority = Marsh, 1875

}}

Diplacodon (Greek: "double" (diplos), "point" (aki), "teeth" (odontes){{cite web|url=https://research.amnh.org/paleontology/perissodactyl/concepts/glossary|archive-url=https://web.archive.org/web/20211120123130/https://research.amnh.org/paleontology/perissodactyl/concepts/glossary|archive-date=20 November 2021|title=Glossary. American Museum of Natural History}}) is a genus of prehistoric odd-toed ungulates in the family Brontotheriidae. It was the size of a rhinoceros, with the last two upper premolars molar-like.{{Cite EB1911|wstitle=Titanotheriidae|volume=26|pages=1018–1019|first=Richard|last=Lydekker|author-link=Richard Lydekker}}

A new species, D. gigan, was described by Matthew C. Mihlbachler in 2011, from the United States.Matthew C. Mihlbachler (2011). "A new uintan horned brontothere from Wyoming and the evolution of canine size and sexual dimorphism in the Brontotheriidae (Perissodactyla: Mammalia)". Journal of Vertebrate Paleontology 31 (1): 202–214. {{doi|10.1080/02724634.2011.539653}}.