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记述了甘肃兰州永登泉头沟发现的４种仓鼠化石：Ｐｌｅｓｉｏｄｉｐｕｓ ｌｅｅｉ Ｙｏｕｎｇ， １９２７；Ｍｅｇａｃｒｉｃｅｔｏｄｏｎ ｓｉｎｅｎｓｉｓ Ｑｉｕ ｅｔ ａｌ．， １９８１； Ｇａｎｏｃｒｉｃｅｔｏｄｏｎ ｃｈｅｎｉ ｇｅｎ． ｅｔ ｓｐ． ｎｏｖ．和Ｐａｒａｃｒｉｃｅｔｕｌｕｓ ｓｃｈａｕｂｉ Ｙｏｕｎｇ， １９２７。仓鼠类的组合和形态特征表明：泉头沟动物群与通古尔动物群的时代接近，同属中中新世通古尔期；指示的环境近似，同为相对干旱的温带丛林－草原环境；但它们的时代和生态环境略有差异，不排除泉头沟动物群时代略晚的可能。
Four hamster fossils found in Quantougou, Yongdeng, Lanzhou, Gansu: Plesiodipus leei Young, 1927; Megacricetodon sinensis Qiu et al. , 1981; Ganocricetodon cheni gen. et sp. nov And Paracricetulus schaubi Young, 1927. The combination and morphological characteristics of the hamster suggest that the age of the Quantougou fauna is similar to that of the Tungur fauna, belonging to the mid-Miocene Tungurlian period; the indicated environment is similar to the relatively temperate jungle- grassland environment; However, their times and ecological environment are slightly different and do not rule out the possibility that the age of Quantougou fauna may be slightly later.