Mining Institute, Perm Federal Research Center, Ural Branch, Russian Academy of Sciences, Perm, Russia.
Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia.
Dokl Biol Sci. 2022 Aug;505(1):105-108. doi: 10.1134/S0012496622040019. Epub 2022 Aug 29.
A total of 1250 lower first molars (m1) of voles (Arvicolini) were studied from Late Pleistocene deposits (the radiocarbon dates from rodent bones: 17 100 ± 50 IGAN-9117; 13 255 ± 60 IGAN-9116) of the Imanay Cave (southern Urals, 53°02' N, 56°26' E). Of these, 24 m1 of voles of the subgenus Stenocranius were found to have broadly connected triangles T4 and T5 (Pitymys-Rhombus) at the base of the anteroconid. This structure is characteristic of lower m1 of Lasiopodomys (Stenocranius) gregaloides (Hinton, 1923) from faunas of the second half of the Early Pleistocene and the first half of the Middle Pleistocene. Molars with such morphology have not been found so far in the Late Pleistocene and Holocene locations of Europe and the Urals.
对来自晚更新世沉积物（来自啮齿动物骨骼的放射性碳日期：17100±50IGAN-9117；13255±60IGAN-9116）的 1250 颗田鼠（Arvicolini）的下第一磨牙（m1）进行了研究，这些磨牙来自伊马奈洞穴（南乌拉尔山脉，53°02'N，56°26'E）。在这些田鼠中，发现 24 颗亚属 Stenocranius 的田鼠的前尖后小尖底具有广泛连接的三角形 T4 和 T5（Pitymys-Rhombus）。这种结构是下半早更新世和上半中更新世动物群中 Lasiopodomys（Stenocranius）gregaloides（Hinton，1923）的下第一磨牙的特征。到目前为止，在欧洲和乌拉尔山脉的晚更新世和全新世地点尚未发现具有这种形态的磨牙。
