Kretzoiarctos gen. nov., the oldest member of the giant panda clade.
Kretzoiarctos gen. nov., the oldest member of the giant panda clade.
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kretzoiarctos gen。十一月，巨型熊猫进化枝的最古老成员。
DOI：
10.1371/journal.pone.0048985
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Morales J
中科院分区：
文献类型：
--
作者：
Abella J;Alba DM;Robles JM;Valenciano A;Rotgers C;Carmona R;Montoya P;Morales J
大熊猫（Ailuropoda melanoleuca）的系统位置是近世纪哺乳动物学家和古生物学家争论的热点之一。根据分子数据，它目前被认为是一种真正的熊科动物，是现存熊类的姊妹分类群，在中新世早期已经分化。然而，从古生物地理学和年代学的角度来看，大熊猫血统的起源仍然难以捉摸，由于缺乏可用的中新世化石记录。直到最近，中国晚中新世的大熊猫属（Ailurarctos）。8-7 mya）被认为是大熊猫亚科最古老的已灭绝成员，这表明大熊猫谱系可能起源于熊属祖先。来自欧洲中新世的所谓的ailuropodine Agriarctos在这个分支的起源中的作用由于缺乏可用的材料而被普遍驳回。本文描述了一个大熊猫属新种Kretzoiarctos gen. nov.，根据两个中新世中期的遗骸（约12-11马）西班牙地方。对熊总科化石和现存成员的支序分析证实了新属被纳入大熊猫亚科。此外，Kretzoiarctos在时间上早于先前已知的来自欧亚大陆的大熊猫分支的晚中新世成员（Agriarctos和Ailurarctos）。因此，前者可以被认为是大熊猫谱系中最古老的记录成员，这对于从古生物地理学的角度理解这一分支的起源具有重要意义。
The phylogenetic position of the giant panda, Ailuropoda melanoleuca (Carnivora: Ursidae: Ailuropodinae), has been one of the most hotly debated topics by mammalian biologists and paleontologists during the last century. Based on molecular data, it is currently recognized as a true ursid, sister-taxon of the remaining extant bears, from which it would have diverged by the Early Miocene. However, from a paleobiogeographic and chronological perspective, the origin of the giant panda lineage has remained elusive due to the scarcity of the available Miocene fossil record. Until recently, the genus Ailurarctos from the Late Miocene of China (ca. 8–7 mya) was recognized as the oldest undoubted member of the Ailuropodinae, suggesting that the panda lineage might have originated from an Ursavus ancestor. The role of the purported ailuropodine Agriarctos, from the Miocene of Europe, in the origins of this clade has been generally dismissed due to the paucity of the available material. Here, we describe a new ailuropodine genus, Kretzoiarctos gen. nov., based on remains from two Middle Miocene (ca. 12–11 Ma) Spanish localities. A cladistic analysis of fossil and extant members of the Ursoidea confirms the inclusion of the new genus into the Ailuropodinae. Moreover, Kretzoiarctos precedes in time the previously-known, Late Miocene members of the giant panda clade from Eurasia (Agriarctos and Ailurarctos). The former can be therefore considered the oldest recorded member of the giant panda lineage, which has significant implications for understanding the origins of this clade from a paleobiogeographic viewpoint.
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大熊猫（Ailuropoda melanoleuca）进化中的颅骨形状转变
影响因子：
--
作者：
Figueirido, Borja;Palmqvist, Paul;Dong, Wei
通讯作者：
Dong, Wei
影响因子：
0.7
作者：
Abella, J.;Montoya, P.;Morales, J.
通讯作者：
Morales, J.
影响因子：
4.1
作者：
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通讯作者：
May-Collado, Laura J.
影响因子：
4.1
作者：
Fulton, Tara L.;Strobeck, Curtis
通讯作者：
Strobeck, Curtis
DOI：
10.1073/pnas.0704198104
发表时间：
2007-06-26
影响因子：
11.1
作者：
Jin, Changzhu;Ciochon, Russell L.;Zhu, Qizhi
通讯作者：
Zhu, Qizhi