The first Sinomastodon (Gomphotheriidae, Proboscidea) skull from the Quaternary in China
The first Sinomastodon (Gomphotheriidae, Proboscidea) skull from the Quaternary in China
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DOI：
10.1007/s11434-012-5519-y
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发表时间：
2012-12
影响因子：
--
通讯作者：
Y. Wang;Chang-zhu Jin;C. Deng;Guang-biao Wei;Yaling Yan
中科院分区：
文献类型：
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作者：
Y. Wang;Chang-zhu Jin;C. Deng;Guang-biao Wei;Yaling Yan
本文报道了安徽人子洞洞沉积物中发现的首个早更新世中国乳齿象（gomphotheridae, Proboscidea）颅骨。11 .中国乳齿龙是目前已知的唯一一种来自旧大陆的短柄三突齿兽，主要生活在上新世早期至更新世的中国。与先前在中国发现的几颗更新世单齿相比，jiangnanensissp。11月出土的颅骨、下颌骨和齿列较为完整，是中国首次发现的第四纪乳突象颅骨。该新种具有短喙状、类似大象的头骨，没有下象牙，具有简单的布齿和三齿兽中间磨牙，在形态上与其他类不同，应属于中国乳齿象属。新物种比人类更先进。汉江岛和上新世型种。其头骨和下颌骨形态居中，但明显比更新世更原始。其臼齿形态。区系分析表明，s。jiangnanensissp。11 .江南地区的寒流及其向南迁移可能与中国东部第四纪初的一次降温事件有关。
The firstSinomastodon(Gomphotheriidae, Proboscidea) skull of the Early Pleistocene, collected from the Renzidong Cave deposits in Anhui Province, Eastern China, is described here asS. jiangnanensissp. nov. As the only brevirostrine trilophodont gomphotheriid known from the Old World,Sinomastodonwas mainly indigenous to China from the Early Pliocene to the Pleistocene. Compared with a few single Pleistocene teeth previously found in China,S. jiangnanensissp. nov. is represented by a relatively complete skull, mandible and dentition, which is the first discovery of a QuaternarySinomastodonskull from China. With a brevirostrine, elephant-like skull, no lower tusks, and simple bunodont and trilophodont intermediate molars, the new species is morphologically distinct from other gomphotheres and should belong to the genusSinomastodon. The new species is more progressive thanS. hanjiangensisand the Pliocene type speciesS. intermediusin its skull and mandible morphology, but is evidently more primitive than the PleistoceneS. yangziensisin its molar morphology. The faunal analysis suggests that the emergence ofS. jiangnanensissp. nov. in Jiangnan area and its southward migration may have been related to a cooling event at the beginning of the Quaternary in Eastern China.