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Squamate reptiles from Kanapoi: Faunal evidence for hominin paleoenvironments.
Journal of Human Evolution ( IF 3.2 ) Pub Date : 2018-06-14 , DOI: 10.1016/j.jhevol.2018.01.007
Jason J Head 1 , Johannes Müller 2
Affiliation  

The squamate fossil record from Kanapoi reveals generic to higher-order similarities with modern East African herpetofaunas. The record is derived from surface collection and screen washing, and consists primarily of isolated vertebrae with a few maxillary and mandibular elements. The most abundant remains are vertebrae of large-bodied Python that are morphologically similar to extant Python sebae, and vertebrae of Varanus cf. (Varanus niloticus + Varanus exanthematicus). Additional cranial and vertebral remains indicate the presence of lygosomine skinks, indeterminate Varanus, Viperidae, cf. Atractaspididae, and multiple colubrine morphotypes in the Kanapoi ecosystem. Despite similarities with modern herpetofaunas, the Kanapoi record lacks taxa common to other East African records, including agamids, chamaeleonids, amphisbaenians, the elapid Naja, and typhlopids. The overall composition of the Kanapoi squamate record is consistent with paleoenvironments similar to modern shrub savanna habitats. There are no indicators of canopied forest environments in squamate faunal composition. The fossil record of Kanapoi suggests that assembly of squamate faunas of modern East Africa was well underway by the late Neogene.



中文翻译:

Kanapoi的鳞状爬行动物:人为古环境的有趣证据。

卡纳波伊(Kanapoi)的鳞状化石记录揭示了与现代东非Herpetofaunas的一般至更高阶的相似性。该记录来自表面收集和筛洗,主要由孤立的椎骨和一些上颌骨和下颌骨组成。数量最多的遗骸是大蟒蛇的椎骨,在形态上与现存的蟒蛇sebaeVaranus cf的椎骨相似。(尼罗拉牛肝菌 +  exanthematicus牛肝菌)。附加颅和椎遗体表明lygosomine石龙子的存在,未定型巨蜥,Vi蛇科,比照。Kanapoi生态系统中的白术科和多种colubrine形态型。尽管与现代疱疹双峰相似,但Kanapoi记录缺少其他东非记录所共有的分类单元,包括agamids,chamaeleonids,amphisbaenian,粗俗的眼镜蛇和拟南芥。Kanapoi鳞状记录的总体组成与古环境相似,类似于现代灌木大草原栖息地。在鳞状动物区系组成中没有遮盖森林环境的迹象。卡纳波伊的化石记录表明,现代新东非的鳞状动物群的聚集在新近纪晚期已开始。

更新日期:2019-11-18
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