CAMELIDAE INDET.

Maguire, Kaitlin Clare & Schmitz, Joshua X. Samuels and Mark D., 2018, The fauna and chronostratigraphy of the middle Miocene Mascall type area, John Day Basin, Oregon, USA, PaleoBios 35, pp. 1-51 : 34-36

CAMELIDAE INDET.

FIG. 20

Referred specimens —From UCMP -3043: right external acoustic meatus, JODA 15592. From UCMP -3059: right partial dentary with p3(?) and m1(?) alveoli, JODA 15560. From UCMP V 4827: molar enamel fragment, JODA 4685. From UCMP -882: astragalus, UCMP 553; metapodial, UCMP 1604. From UCMP -884: phalanx, UCMP 472; astraglus, UCMP 503. From UCMP -886: calcaneum, UCMP 723.

Occurrence — UCMP -3043, UCMP -3059, UCMP

36 PALEOBIOS, VOL. 35, JANUARY 15, 2018

V 4827.

Description and Remarks —JODA 15560 is a small camel, the dentary is gracile and the premolar has an anteroposterior length of 9.85 mm and a transverse width of 4.49 mm. JODA 4685 is high-crowned (height= 25.12 mm) and from the lower unit of the Mascall Formation. This specimen demonstrates not only the presence of camels in the lower unit of the Mascall Formation, but also demonstrates hypsodonty in the family in the earliest deposits of the Mascall fauna.

Figures

Figure 20. Camelidae right partial dentary with p3 (?), JODA 15560. A. Occlusal view. B. Lateral view. Scale bar=1cm.