New Apterodontinae (Hyaenodontida) from the Eocene locality of Dur At-Talah (Libya): systematic, paleoecological and phylogenetical implications.
New Apterodontinae (Hyaenodontida) from the Eocene locality of Dur At-Talah (Libya): systematic, paleoecological and phylogenetical implications.
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DOI：
10.1371/journal.pone.0049054
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Brunet M
中科院分区：
文献类型：
--
作者：
Grohé C;Morlo M;Chaimanee Y;Blondel C;Coster P;Valentin X;Salem M;Bilal AA;Jaeger JJ;Brunet M
非洲Hyaenodontida主要分布于埃及晚始新世和早渐新世的Fayum坳陷，在最古老的古近纪地区多样性很差。在此，我们报告了在中始新世晚期的Dur At-Talah（利比亚中部）沉积物中发现的新的hyaenodontians，已知它记录了最早的非洲类人猿辐射。新发现的hyaenodonti齿类动物遗骸以牙齿和颅后标本为代表，这些标本包括R.J.G. Savage在上个世纪和最近的法国-利比亚战役中发现的历史材料。该材料包括两具无齿龙，特别是一具翼龙的亚完整骨架，为无齿龙属化石记录带来了新的颅后元素。对Dur At-Talah颅骨后遗骸的解剖分析表明，无齿龙的生活方式是半水生的，这在舌齿动物中是一种完全不同寻常的运动方式。我们还对包括翼龙在内的鬣狗类进行了首次进化分析：翼龙和拟翼龙似乎是“hyainailourines”的近亲，特别是非洲渐新世-中新世的Metasinopa物种。朗氏无齿龙（Apterodon langebadreae十一月sp.）可能是该属中最原始的物种，这证实了无齿龙科起源于非洲，并在渐新世早期之前进一步扩散到欧洲。这些数据增强了我们对非洲早期鬣狗多样化的认识，并强调了了解它们的进化史对改善古近系古生物地理情景的重要性。
The African Hyaenodontida, mainly known from the Late Eocene and Early Oligocene Fayum depression in Egypt, show a very poor diversity in oldest Paleogene localities. Here we report new hyaenodontidans found in the late Middle Eocene deposits of Dur At-Talah (Central Libya), known to have recorded the earliest radiation of African anthropoids. The new hyaenodontidan remains are represented by dental and postcranial specimens comprising the historical material discovered by R.J.G. Savage in the last century and that of the recent Franco-Libyan campaigns. This material includes two apterodontines, in particular a subcomplete skeleton of Apterodon langebadreae nov. sp., bringing new postcranial elements to the fossil record of the genus Apterodon. Anatomical analysis of the postcranial remains of Dur At-Talah suggests a semi-aquatic lifestyle for Apterodon, a completely unusual locomotion pattern among hyaenodontidans. We also perform the first cladistic analysis of hyaenodontidans including apterodontines: Apterodon and Quasiapterodon appear close relatives to “hyainailourines”, in particular to the African Oligo-Miocene Metasinopa species. Apterodon langebadreae nov. sp. could be the most primitive species of the genus, confirming an African origin of the Apterodontinae and a further dispersion event to Europe before the early Oligocene. These data enhance our knowledge of early hyaenodontidan diversification into Africa and underline how crucial is the understanding of their evolutionary history for the improvement of Paleogene paleobiogeographic scenarii.
影响因子：
1.4
作者：
Court, N
通讯作者：
Court, N
影响因子：
1.8
作者：
Argot, Christine
通讯作者：
Argot, Christine
影响因子：
3.2
作者：
BOWN, TM;KRAUS, MJ;VONDRA, CF
通讯作者：
VONDRA, CF