Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 89. (Budapest 1997)

Hír, J.: Cricetus runtonensis solymarensis ssp. n. (Mammalia, Rodentia) from the Late Middle Pleistocene fauna of Solymár

ml. The morphology of this molar is very variable (Table 14). 17 morphotypes were distinguished. 8 of them are common with the materials (V8, recent C. cricetus) previously studied by the author (Fig. 13). It refers to the 53% of the molars. One morphotype of this group (VL) is subdominant in the Solymár material and dominant in V8. A very special morphological feature of the molar is the duplication of the mesolophid (Fig. 14) in the SC, SD, SE , SH types (37% of the teeth). By the side of the normal Msld another enamel ridge is found starting from the hypolophulid, or from the joint point of the ectolophid and the hypolophulid. This element is not named in the nomenclature of MEIN et FREUDENTHAL (1971A, b) and I would like to suggest the name "paramesolophid (Pmsld)". In the morphotypes SA and SB only the "paramesolophid" is found and the mesolophid is missing (Fig. 14). This kind of duplication of the mesolophid was not found in the studied C. cricetus and C. praeglacialis materials, only in the C. runtonensis assemblage of Somssich-hegy 2, but only in 2% of the teeth. Fig. 9. Morphotype system of the M2 molars. Explanation:; A: anterolophule is simple; B: anterolophule is doubled; 0: mesolophe is missing; 1: mesolophe is found; 0: posterolophule is simple; 1: posterolophule is ramified