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 marshi, Menops varians, Menops serotinus, Menops crassicornis, Menops bakeri, Menops walcotti, Diploclonus amplus, Titanotherium proutii, Menodus hypoceras, Menodus dolichoceras, Menodus angustigenis, Menodus tichoceras, Menodus torvus, Menodus heloceras, Menodus giganteus, Teleodus avus, Symborodon ophryas, Symborodon trigonoceras, Anisacodon montanus, Brontops bicornutus, Brontops brachycephalus, Brontops dispar, Brontops selwynianus, Brontops robustus, Brontops validus, Brontops tyleri, Titanops medius, Allops crassicornus
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.