Trogolemur myodes Matthew, 1909

Kelly, Thomas S. & Murphey, Paul C., 2016, Mammals from the earliest Uintan (middle Eocene) Turtle Bluff Member, Bridger Formation, southwestern Wyoming, USA, Part 1: Primates and Rodentia, Palaeontologia Electronica 7 (8), pp. 1-55 : 10

Trogolemur myodes Matthew, 1909

Figure 4.4-5 , Table 1

Referred specimens. From UCM Locality 92189: m2, UCM 78097; m3, UCM 67833.

Description. The m3 differs from the m2 by having a relatively narrower talonid, a slightly more anteroposteriorly compressed trigonid and in being much more elongate anteroposteriorly due the presence of a large hypoconulid. The m1-2 exhibit the following additional characters: 1) small size; 2) relatively low-crowned; 3) a paraconid positioned relatively close to the metaconid, resulting in the trigonid being almost closed off labially; 4) a relatively tall, distinct entoconid and hypoconid; 5) a cristid obliqua extending anterolingually from the hypocone to join the posterior wall of the trigonid below the protoconid apex; and 6) a weak labial cingulid.

Remarks. The TBM molars are indistinguishable in size and occlusal morphology from those of Trogolemur myodes ( Matthew, 1909; Szalay, 1976; Gunnell et al., 2008) and are referred to the species.

Figures

FIGURE 4. Primates from TBM. 1-3, Notharctus robustior: 1, RM1, DMNH 75300; partial RM1 or 2, UCM 78457; 3, partial RM3, UCM 69054. 4-5, Trogolemur myodes: 4, Rm2, UCM 78097; 5, Rm3, UCM 67883. 6, Washakius insignis, LM1 or 2, UCM 68541. 7-9, Omomys carteri: 7, LM3, 110357; 8, Lm1, SDSNH 110355; 9, Rm3, DMNH 75326. All occlusal views. Scale bar equals 1 mm.

FIGURE 5. Microparamys from TBM. 1-5, Microparamys minutus: 1, LdP4, UCM 66310; 2, LP4, UCM 95695; 3, LM1 or 2, UCM 95697; 4, Rp4, SDSNH 110374; 5, Lm1 or 2, DMNH 74140. 6-9, Microparamys sp.: 6, LdP4, SDSNH 110395; 7, Lp4, SDSNH 110360; 8, Lm1, SDSNH 110361; 9, Lm2, SDSNH 110362. All occlusal views. Scale bar equals 1 mm.