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Mesoreodon minor Douglass 1903 (oreodont)

Mammalia - Artiodactyla - Merycoidodontidae

PaleoDB taxon number: 48418

Alternative combinations: Eporeodon minor, Promerycochoerus (Pseudopromerycochoerus) minor, Promerycochoerus hollandi minor, Promerycochoerus minor

Synonyms: Desmatochoerus (Paradesmatochoerus) grangeri Schultz and Falkenbach 1954 (no. 45586), Desmatochoerus (Paradesmatochoerus) monroecreekensis Schultz and Falkenbach 1954 (no. 45592), Desmatochoerus (Paradesmatochoerus) wyomingensis Schultz and Falkenbach 1954 (no. 45596), Desmatochoerus macrosynaphus Riel 1964 (no. 45590), Eporeodon cheeki Schlaikjer 1934 (no. 46228), Eporeodon major cheeki Schlaikjer 1934 (no. 390039), Mesoreodon cheeki Schlaikjer 1934 (no. 48408), Mesoreodon cheeki scotti Schlaikjer 1934 (no. 390038), Mesoreodon scotti Schlaikjer 1934 (no. 48419), Pseudodesmatochoerus wascoensis Schultz and Falkenbach 1954 (no. 51193)

Full reference: E. Douglass. 1903. New vertebrates from the Montana Tertiary. Annals of Carnegie Museum 2(5):145-199

Belongs to Mesoreodon according to M. S. Stevens and J. B. Stevens 1996

Sister taxa: Mesoreodon chelonyx, Mesoreodon floridensis

Subtaxa: Promerycochoerus (Pseudopromerycochoerus) minor pygmyus

View classification

Type specimens:

  • Mesoreodon minor: CM 769, a partial skull (Anterior portion of skull with I2-M3, partial mandible with i1-m3, and fragments). Its type locality is Lower Cabbage Patch Beds, which is in an Arikareean terrestrial horizon in the Renova Formation of Montana.
  • Desmatochoerus (Paradesmatochoerus) grangeri: F:AM 33303, a partial skeleton (Skull with I1-M3, mandible with i1-m3, 2 femora (1 partial), 2 tibiae, partial pes, and vertebrae). Its type locality is Little Muddy Creek (Niobrara County), which is in an Arikareean terrestrial horizon in Wyoming.
  • Desmatochoerus (Paradesmatochoerus) monroecreekensis: F:AM 37551, a partial skeleton (Skull with l1(br.)-M3, mandible with i1-m3, partial femur, partial tibia, vertebrae, and pelvis). Its type locality is Big Muddy Creek, which is in an Arikareean terrestrial horizon in Wyoming.
  • Desmatochoerus (Paradesmatochoerus) wyomingensis: F:AM 33312, a skull (Skull with I1-M3 and mandible with i1-m3). Its type locality is Willow Creek, which is in an Arikareean terrestrial horizon in Wyoming.
  • Desmatochoerus macrosynaphus: MSU 0940, a partial skull (a mandible with i2-m3; partial upper dentition including right P3 -M3 , left C, P2 , P3 , M3). Its type locality is Lower Cabbage Patch Beds, which is in an Arikareean terrestrial horizon in the Renova Formation of Montana.
  • Eporeodon cheeki: MCZ 17765, a partial skeleton (Skull with I1-M3, mandible with i1-m3, and most of skeleton). Its type locality is Sixty Six Mountain (Upper), which is in an Arikareean terrestrial horizon in the Harrison Formation of Wyoming.
  • Mesoreodon scotti: Its type locality is Big Muddy Creek, which is in an Arikareean terrestrial horizon in Wyoming.
  • Pseudodesmatochoerus wascoensis: AMNH 7827, a partial skull (Partial skull with I1-I3 alv. and C/(rt.)-M3).

Ecology: scansorial insectivore

Average measurements (in mm): M1 14.2 x 17.0, M2 17.0 x 19.5, M3 25.5 x 22.4, m1 15.0 x 11.8, m2 18.0 x 14.5, m3 29.0 x 15.5