Pontifactor bestiola West, 1974

Murphey, Paul C. & Kelly, Thomas S., 2017, Mammals from the earliest Uintan (middle Eocene) Turtle Bluff Member, Bridger Formation, southwestern Wyoming, USA, Part 2: Apatotheria, Lipotyphla, Carnivoramorpha, Condylartha, Dinocerata, Perissodactyla and Artiodactyla, Palaeontologia Electronica (Cambridge, England: 2003) 20 (2), pp. 1-51 : 22-23

publication ID	https://doi.org/ 10.26879/720
publication LSID	lsid:zoobank.org:pub:341D2FE3-977D-4C82-A337-C681FC00C53A
persistent identifier	https://treatment.plazi.org/id/BB4187B4-FF8F-FF91-FC46-7639FD71F880
treatment provided by	Felipe
scientific name	Pontifactor bestiola West, 1974
status

Treatment

Figure 8.7 View FIGURE 8 , Table 2

Referred specimens. From UCM Locality 92189: RM 1, UCM 71129.

Description. The M1 paracone, metacone, and protocone are conical and tall and with sharp apices. The protocone is the largest primary cusp and the metacone is slightly larger than the paracone. The preparacrista, postmetacrista, and centrocrista are strongly developed, forming a W-shaped ectoloph. The hypocone is small, but distinct, and positioned lower and posterolingually of the protocone apex. A large, distinct mesostyle is positioned at the center of the centrocrista between and labial of the paracone and metacone apices. The parastyle is large and projects anterolabially. A small stylocone is present at the labial terminus of the premetacrista. The stylar shelf extends posterolabially to join a distinct metastyle. A distinct paraconule and metaconule are present at the labial terminus of the preprotocrista and postprotocrista, respectively. The anterolingual cingulum is weak, extending labially from the anterolingual base of the protocone.

Remarks. UCM 71129 is indistinguishable in size and occlusal morphology to the M1 of Pontifactor bestiola ( West, 1974; Gunnell et al., 2008b) and is confidently be assigned to the species.