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2004年以来,广西崇左系统发掘出土了一些与巨猿共生的早更新世最后河马齿河猪(Hippopotamodon ultimus)的新材料。根据新材料及以前积累的各地点材料,产于广西、贵州和重庆的原“最后双齿尖河猪(Dicoryphochoerus ultimus)”的系统分类位置由“双齿尖河猪”属修订到河马齿河猪属(Hippopotamodon),而最后河马齿河猪(H.ultimus)是河马齿河猪属中的有效种。这种猪的个体较大,大于猪属(Sus)的成员。其鼻吻部很长,P1和P2间的齿隙发育,M3第三叶相对窄小,下犬齿verrucosus型,p4主尖在顶部分裂成双尖,m3的第三叶由两个主尖组成。最后河马齿河猪仅分布于华南地区,其时代分布局限于早更新世早期和中期,是河马齿河猪的最晚代表。
Since 2004, a new material of the last Pleistocene Hippopotamodon ultimus symbiosis with great apes has been unearthed in Chongzuo, Guangxi. Based on the new material and the previously accumulated materials at each site, the original system of “Dicoryphochoerus ultimus” in Guangxi, Guizhou and Chongqing was revised by To Hippopotamodon, while H.ultimus is the most effective species in the genus Hippopotamus. The pigs are larger and larger than the Sus members. The nasal kiss is very long, P1 and P2 between the gap development, M3 is relatively narrow third leaf, the lower canis verrucosus type, p4 main tip split at the top into double-pointed, the third leaf of m3 consists of two main points . In the end, the hippogriff was only distributed in southern China. Its epoch was limited to the early and mid-early Pleistocene and was the latest representative of the hippocampus.