A new species of Nyanzachoerus (Cetartiodactyla: Suidae) from the late Miocene Toros-Ménalla, Chad, central Africa.
A new species of Nyanzachoerus (Cetartiodactyla: Suidae) from the late Miocene Toros-Ménalla, Chad, central Africa.
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DOI：
10.1371/journal.pone.0103221
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发表时间：
2014
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：
Boisserie JR;Souron A;Mackaye HT;Likius A;Vignaud P;Brunet M
在中新世晚期和上新世早期，四齿齿猪是非洲最主要的大型杂食性哺乳动物。然而，新物种往往是在有限的证据的基础上确定的，这种情况影响了它们的生物年代学相关性以及环境和地理重建的价值。对已知最丰富的颅齿骨遗骸的描述归因于四齿牙龙Nyanzachoerus有助于改善这种情况。这些标本是由法国-乍得使命古人类学代表团在中非乍得北方托罗斯-梅纳拉的中新世晚期沉积物中采集的。我们将它们与来自非洲东部和南部的Nyanzachoerus进行了比较，使用现存物种作为形态变异模式的参考。由于观察的大样本，我们的工作集中在颅下颌形态，牙齿形态和度量（改善了远中第三磨牙的复杂性指数评分和前磨牙-磨牙比的详细调查）。在托罗斯-梅纳拉发现了两个分类群：Nyanzachoerus khinzir nov. sp.和Ny.参见澳大利亚。我们还修订了其他物种的分类地位，包括：限制Ny。从利比亚（Saudi）的正模标本中，发现了Ny的复活。”““tulotos，和Ny的同义词。kuseralensis与Ny.韦兰迪在纽约州托罗斯-梅纳拉。Khinzir是唯一与炭疽热兽科古龙和原始人Sahelanthropus共存的suid，而Ny.参见澳大利亚种与不同的、可能更年轻的动物群环境有关。Nyanzachoerus。khinzir，可能有一个多样化的饮食，支持最新的中新世非洲中部和东部非洲之间的地理区别。
During the latest Miocene and the early Pliocene, tetraconodontine suids were the most predominant large omnivorous mammals in Africa. Yet, new species were often identified on the grounds of limited evidence, a situation impacting their value for biochronological correlations as well as for environmental and biogeographical reconstructions. The description of the most abundant known collection of craniodental remains attributed to the tetraconodontine Nyanzachoerus helps to improve this situation. These specimens were collected in the upper Miocene deposits at Toros-Ménalla, northern Chad, central Africa, by the Mission Paléoanthropologique Franco-Tchadienne. We compared them with Nyanzachoerus from eastern and southern Africa, using extant species as a reference for patterns of morphological variation. Thanks to a large sample of observations, our work focused as much on craniomandibular morphology as on dental morphology and metrics (improved by an index scoring for the complexity of distal third molars and a detailed investigation of premolar-molar ratios). We recognized two taxa at Toros-Ménalla: Nyanzachoerus khinzir nov. sp. and Ny. cf. australis. We also revised the taxonomic status for other species, including: the restriction of Ny. syrticus to its holotype specimen from Sahabi (Libya), the resurrection of the nomen Ny. tulotos, and the synonymy of Ny. kuseralensis with Ny. waylandi. At Toros-Ménalla, Ny. khinzir was the only suid coexisting with the anthracotheriid Libycosaurus and the hominid Sahelanthropus, whereas Ny. cf. australis was associated with a different, probably younger faunal context. Nyanzachoerus. khinzir, which probably had a diversified diet, supports a latest Miocene biogeographical distinction between central Africa and eastern Africa.
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影响因子：
1.4
作者：
Abdala, F;Hancox, PJ;Neveling, J
通讯作者：
Neveling, J
DOI：
10.1098/rstb.2010.0069
发表时间：
2010-10-27
影响因子：
6.3
作者：
Brunet, Michel
通讯作者：
Brunet, Michel
DOI：
10.1016/s1251-8050(00)01492-0
发表时间：
2001-01-15
期刊：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES
影响因子：
--
作者：
Brunet, M;White, TD
通讯作者：
White, TD
DOI：
10.1016/s1251-8050(97)87460-5
发表时间：
1998-01-01
期刊：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES
影响因子：
--
作者：
Brunet, M;Beauvilain, A;Vignaud, P
通讯作者：
Vignaud, P
影响因子：
64.8
作者：
Brunet, M;Guy, F;Vignaud, P
通讯作者：
Vignaud, P