Glis minor Kowalski, 1956

Popov, Vasil V., 2004, Pliocene small mammals (Mammalia, Lipotyphla, Chiroptera, Lagomorpha, Rodentia) from Muselievo (North Bulgaria), Geodiversitas 26 (3), pp. 403-491 : 452

Glis minor Kowalski, 1956 ( Fig. 25 L-R)

Glis sackdillingensis minor Kowalski, 1956: 384-386 , pl. IV, fig. 8; text. fig. 2-f; 1963: 545-550, figs 8-10.

Glis minor – Kretzoi 1959: 240. — Kowalski 1963: 545-550.

Glis sackdillingensis – De Bruijn & Van der Meulen 1975: 334, 335, pl. 5, figs 14-17.

MATERIAL EXAMINED. — 1 p4 (Ms133), 2 m 1 (Ms134), 1 m 2 (Ms135), 2 P4 (Ms136), 7 M1-2 (Ms138, 139, 139-1-5), 1 M3 (Ms139).

MEASUREMENTS (L × W). — p4 = 1.08 × 1.02; m1 = 1.58 × 1.54; 1.57 × 1.45; m2 = 1.57 × 1.57; P4 = 1.15 × 1.34; 1.15 × 1.20; M1-2 = 1.53 × 1.60; 1.50 × 1.53; 1.45 × 1.60; 1.57 × 1.50; 1.62 × 1.55; 1.52 × 1.57; 1.40 × 1.60; M3 = 1.22 × 1.48.

DESCRIPTION

p4 has one root. The shape of the occlusal surface is triangular with rounded angles. There are four main and two extra ridges.

The lower molars are with two roots. The dental pattern of the lower molars consists of four main ridges, one centrolophid and two extra ridges in the anterior and posterior basins, respectively.

P4 shows rounded occlusal surface with six ridges.

The upper molars are three rooted. They possess four main ridges, one centroloph and two extra ridges (between anteroloph and protoloph, and between metaloph and pos- teroloph). The occlusal surface of M3 shows similar pattern.

REMARKS

The proposed synonymy between Glis minor and G. sackdillingens (Heller, 1930) ( De Bruijn & Van der Meulen 1975) seems unlikely since these forms differ in size and show complementary stratigraphic ranges. Kowalski (1963), based on the teeth proportions, considered Glis minor as a specialized form, which probably is not in direct evolutionary relationship with the recent species. The overall appearance of the material from Muselievo agrees well with Glis minor from Weze ( Kowalski 1963), a n d G u n d e r s h e i m -4 (G e r n a m y (F e j f a r & Storch 1990). Some of the available teeth are slightly smaller than the teeth of G. minor from Wölfersheim ( Germany) ( Dahlmann 2001).

Figures

FIG. 25. — A-I, Myomimus complicidentatus n. sp.; A, left m1, Ms122, occlusal view; B, right m1, Ms123, occlusal view; C, left m2, Ms125, occlusal view; D, right m2, Ms126, occlusal view; E, right m3, Ms124, occlusal view; F, left M1-2, Ms127, occlusal view; G, left M1-2, Ms128, occlusal view; H, right M2, Ms129, occlusal view (holotype); I, right M3, Ms130, occlusal view; J, K, Dryomimus eliomyoides Kretzoi, 1959; J, right M1-2, Ms132, occlusal view; K, left M1-2, Ms131, occlusal view; L-R, Glis minor Kowalski, 1956; L, right p4, Ms133, occlusal view; M, left M2, Ms134, occlusal view; N, right M2, Ms135, occlusal view; O, right P3, Ms136, occlusal view; P, right M1-2, Ms138, occlusal view; Q, right M1-2, Ms137, occlusal view; R, right M3, Ms139, occlusal view. Scale bar: 1 mm.