Mammalia - Perissodactyla - Brontotheriidae
Alternative combinations: Megaceratops acer, Symborodon acer, Titanotherium acer
Synonyms: Symborodon altirostris Cope 1873, Titanotherium altirostris Cope 1873
Full reference: E. D. Cope. 1873. Second notice of extinct Vertebrata from the Tertiary of the Plains. Paleontological Bulletin 15:1-6
Belongs to Megacerops according to H. F. Osborn 1929
See also Cope 1873, Cope 1873, Cope 1875, Galbreath 1953, Hay 1902, Mader 1989, Mader 1998, Osborn 1896 and Osborn 1902
Sister taxa: Megacerops assiniboiensis, Megacerops bucco, Megacerops coloradensis, Megacerops copei, Megacerops curtus, Megacerops elatus, Megacerops kuwagatarhinus, Megacerops osborni, Megacerops riggsi, Megacerops syceras, Menops crassicornis, Menops bakeri, Menops marshi, Menops varians, Menops serotinus, Menops walcotti, Teleodus avus, Titanops medius, Titanotherium proutii, Menodus angustigenis, Menodus tichoceras, Menodus hypoceras, Menodus dolichoceras, Menodus giganteus, Menodus torvus, Menodus heloceras, Symborodon trigonoceras, Symborodon ophryas, Anisacodon montanus, Diploclonus amplus, Allops crassicornus, Brontops bicornutus, Brontops robustus, Brontops tyleri, Brontops dispar, Brontops brachycephalus, Brontops selwynianus, Brontops validus
Type specimens:
- Megacerops acer: Its type locality is Horsetail Creek, which is in a Chadronian terrestrial horizon in the White River Formation of Colorado
- Symborodon altirostris:
Distribution: found only at Horsetail Creek
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.