- order: Plesiadapiformes
- superfamily: Plesiadapoidea
- family: Plesiadapidae
This species had a deep mandible (Fleagle, 1999). This species lacked a fused mandibular symphysis (Conroy, 1990). This species had a dental formula of 1?:?:3:3 on the upper jaw and 1:0:2:3 on the lower jaw (Conroy, 1990). The lower molars of this species had a relatively low trigonid and a broad talonid (Fleagle, 1999). The premolars and molars had low, bulbous cusps (Fleagle, 1999). This species had procumbent incisors (Fleagle, 1999). The upper incisors had a large posterocone towards the back (Conroy, 1990).
Chiromyoides major was found in North America during the late Paleocene epoch in the early Clarkforkian stage (Conroy, 1990).
Based on teeth morphology this species had a granivorous diet (Fleagle, 1999).
Conroy, G.C. 1990. Primate Evolution. W.W. Norton and Co.: New York.
Fleagle, J.G. 1999. Primate Adaptation and Evolution. Academic Press: San Diego.
Last updated: November 22, 2002