Cimolomys gracilis Marsh 1889 (multituberculate)

Mammalia - Multituberculata - Cimolomyidae

Alternative combination: Ptilodus gracilis

Synonyms: Allacodon fortis Marsh 1892, Cimolodon agilis Marsh 1892, Cimolomys agilis Marsh 1892, Cimolomys diagona Marsh 1889, Cimolomys digona Marsh 1889, Cimolomys nitidus Marsh 1889, Meniscoessus brevis Marsh 1889, Selenacodon brevis Marsh 1889

Full reference: O. C. Marsh. 1889. Discovery of Cretaceous Mammalia. American Journal of Science and Arts, series 3 38:81-92

Belongs to Cimolomys according to J. A. Lillegraven and M. C. McKenna 1986

See also Archibald 1982, Carrano 2023, Clemens 1964, Clemens and Kielan-Jaworowska 1979, Hay 1902, Kielan-Jaworowska et al. 2004, Lillegraven 1969, Marsh 1889, Marsh 1889, Marsh 1892, Marsh 1897, Osborn 1893, Simpson 1929, Simpson 1937, Sloan and Russell 1974, Storer 1991 and Wood and Ormsbee 1954

Sister taxa: Cimolomys bellus, Cimolomys clarki, Cimolomys milliensis, Cimolomys trochuus

Type specimens:

  • Cimolomys gracilis: YPM 11835, a tooth (M1). Its type locality is Mammal Quarry No. 1 (UCMP V-5003), which is in a Lancian terrestrial horizon in the Lance Formation of Wyoming.
  • Allacodon fortis: USNM 2137, a tooth (upper premolar).
  • Cimolodon agilis: USNM 2132, a mandible (partial mandible with M1).
  • Cimolomys digona: YPM 11779, a tooth (M1). Its type locality is Mammal Quarry No. 5, which is in a Lancian terrestrial horizon in the Lance Formation of Wyoming.
  • Cimolomys nitidus: YPM 11776, a tooth (M1). Its type locality is Mammal Quarry No. 1 (UCMP V-5003), which is in a Lancian terrestrial horizon in the Lance Formation of Wyoming.
  • Selenacodon brevis: YPM 11876, a tooth (M2). Its type locality is Mammal Quarry No. 1 (UCMP V-5003), which is in a Lancian terrestrial horizon in the Lance Formation of Wyoming.

Ecology: arboreal herbivore

Distribution:

• Cretaceous of Canada (5: Alberta, Saskatchewan collections), United States (25: Montana, South Dakota, Wyoming)

Total: 30 collections including 32 occurrences

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Specimen images are retrieved through the ePANDDA API.


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