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Protomarctus optatus Matthew 1924 (bone-crushing dog)

Osteichthyes - Carnivora - Canidae

PaleoDB taxon number: 51059

Alternative combination: Tomarctus optatus

Full reference: W. D. Matthew. 1924. Third contribution to the Snake Creek Fauna. Bulletin of the American Museum of Natural History 50:59-210

Belongs to Protomarctus according to X. Wang et al. 1999

Sister taxa: none

Type specimen: Its type locality is Thomson Quarry, which is in a Hemingfordian terrestrial horizon in the Sheep Creek Formation of Nebraska

Ecology: scansorial insectivore

Average measurements (in mm): P4 15.9 x 7.5, M1 12.3 x 14.6, M2 7.39 x 11.23, p4 10.4 x 5.5, m1 17.7 x 7.2, m2 9.83 x 6.15