Tamias orlovi ( Sulimski, 1964 )

Popov, Vasil V., 2004, Pliocene small mammals (Mammalia, Lipotyphla, Chiroptera, Lagomorpha, Rodentia) from Muselievo (North Bulgaria), Geodiversitas 26 (3), pp. 403-491 : 448

Tamias orlovi ( Sulimski, 1964) ( Fig. 24H )

Eutamias orlovi Sulimski, 1964: 165-169 .

Tamias orlovi – Black & Kowalski 1974: 466.

MATERIAL EXAMINED. — 1 m 3 (Ms144); (L × W) = 2.02 × 1.8.

DESCRIPTION

The metalophid is short; the anteroconid is not distinct, incorporated in the anterolophid. The metastylid is very small, situated at the base of the metaconid. The mesolophid is relatively large. There is a well developed antero-buccal reentrant valley. The tooth has four roots but the central lingual root is fused with the posterior one.

REMARKS

The Muselievo specimen differs from the early Miocene species Tamias eviensis De Bruijn, Van der Meulen & Katsikatsos, 1980 in having larger size and somewhat simplified occlusal pattern; the entoconid is not well individualized on the end of the posterolophid, the mesostylid and anteroconid are poorly developed on the anterolophid. In the same time, this tooth is indentical to that of Tamias orlovi from Weze 1 ( Sulimski 1964).

Figures

FIG. 24. — A, Pliopetaurista dehneli (Sulimski, 1964), left p4, Ms141, occlusal view; B, Sciurus sp., left M1-2, Ms142, occlusal view; C,?Spermophilus sp., right p4, Ms143, occlusal view; D-G, Allocricetus bursae Schaub, 1930; D, right m1, Ms309, occlusal view; E, right m1, Ms310, occlusal view; F, left M1, Ms313, occlusal view; G, left M1, Ms311, occlusal view; H, Tamias orlovi (Sulimski, 1964), left M3, Ms144, occlusal view. Scale bars: 1 mm.