Mammalia - Artiodactyla - Merycoidodontidae
Alternative combination: Mesoreodon megalodon
Synonyms: Merycoides giganteus Schultz and Falkenbach 1949, Mesoreodon wheeleri Koerner 1940
Full reference: O. A. Peterson. 1907. The Miocene Beds of Western Nebraska and Eastern Wyoming and Their Vertebrate Faunae. Annals of Carnegie Museum 4(3):21-72
Belongs to Desmatochoerus according to M. S. Stevens et al. 2023
See also Koerner 1940, Lander 1998, Peterson 1906, Schultz and Falkenbach 1949, Stevens and Stevens 1996, Stevens and Stevens 2007, Tabrum and Nichols 2001 and Thorpe 1937
Sister taxa: none
Subtaxa: Mesoreodon megalodon sweeti
Type specimens:
- Desmatochoerus megalodon: CM 1325, a partial skull (front of the skull and lower jaws of a young individual, but with all the permanent teeth in position). Its type locality is Lower Monroe Creek, which is in an Arikareean terrestrial horizon in Nebraska.
- Merycoides giganteus: F:AM 33316, a skull (Skull with C/-M3). Its type locality is Big Muddy Creek, which is in an Arikareean terrestrial horizon in Wyoming.
- Mesoreodon wheeleri: YPM 13950, a partial skull (Skull with I1-I3 alv. and C/-M3 (P1-P2 rt.)). Its type locality is Fort Logan, which is in an Arikareean terrestrial horizon in Montana.
Ecology: ground dwelling herbivore
Distribution:
• Harrisonian of United States (1: Nebraska collection)
• Arikareean of United States (9: Montana, Nebraska, Wyoming)
• Oligocene of United States (3: Nebraska, New Mexico, South Dakota)
Total: 13 collections including 14 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.