New material of Stephanorhinus (Rhinocerotidae, Mammalia) from Jinyuan Cave, Luotuo Hill in Dalian, Northeast China

New material of Stephanorhinus (Rhinocerotidae, Mammalia) from Jinyuan Cave, Luotuo Hill in Dalian, Northeast China
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大连骆驼山金源洞的千金犀(犀科,哺乳纲)新材料

DOI:
10.1080/08912963.2022.2130793
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发表时间:
2022-10
期刊:
影响因子:
1.4
通讯作者:
Yuan Wang
Yuan Wang
中科院分区:
地球科学3区
文献类型:
--
作者:
Boyang Sun;Yaling Yan;Changzhu Jin;Xichao Dai;Yuan Wang

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本研究描述了大连骆驼山金源洞上层的中更新世犀牛材料。标本主要由青少年和老年个体的上颌骨和下颌骨组成,分别具有牙列。根据新发现的更新世犀牛与已知记录的比较,金源洞标本与Stephanorhinus kirchbergensis最为相似,初步鉴定为Stephanorhinus cf.kirchbergensis。金源洞犀牛标本上存在牙齿缺失,表现为没有双侧下颌骨。这个问题可能是遗传问题造成的。根据环境调查的结果,这种情况可能是由于粗粮饮食造成的机械损伤造成的,这可能导致牙齿脱落和牙槽重塑。
Middle Pleistocene rhinocerotid material from the upper strata of Jinyuan Cave, Luotuo Hill, Dalian, is described in the present study. The specimens mainly consist of maxillary and mandible with dentition of juvenile and aged individuals, respectively. Based on comparison between the new discovery and known records of Pleistocene rhinocerotid, the Jinyuan Cave specimens are most similar toStephanorhinus kirchbergensisand then have been identified asStephanorhinuscf.kirchbergensis. Tooth loss has been present on the Jinyuan Cave rhinocerotid specimen, represented by a mandible without both p2s. This problem could be a result of heredity issues. This condition may be due to mechanical damage from a coarse diet, which can lead to tooth loss and alveolar remodelling, according to the findings from an environmental investigation.
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发表时间: 1995-11
影响因子: 2.8
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