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首页> 外文期刊>Trends in Ecology & Evolution >Nice snake, shame about the legs [Review]
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Nice snake, shame about the legs [Review]

机译:漂亮的蛇,双腿感到羞耻[评论]

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摘要

Snakes are one of the most extraordinary groups of terrestrial vertebrates, with numerous specializations distinguishing them from other squamates (lizards and their allies). Their musculoskeletal system allows creeping, burrowing, swimming and even gliding, and their predatory habits are aided by chemo- and thermoreceptors, an extraordinary degree of cranial kinesis and, sometimes, powerful venoms. Recent discoveries of indisputable early fossil snakes with posterior legs are generating intense debate about the evolutionary origin of these reptiles. New cladistic analyses dispute the precise significance and phylogenetic placement of these fossils. These conflicting hypotheses imply radically different scenarios of snake origins and relationships with wide biological implications.
机译:蛇是陆生脊椎动物中最非同寻常的群体之一,其众多专长使其与其他鳞茎(蜥蜴及其盟友)区分开。它们的肌肉骨骼系统可以爬行,穴居,游泳甚至滑行,并且它们的掠食性得到化学和温度感受器,极高的颅运动能力以及有时强大的毒液的帮助。后腿无可争议的早期化石蛇的最新发现引起了关于这些爬行动物进化起源的激烈争论。新的分类分析法对这些化石的精确意义和系统发育定位提出了质疑。这些相互矛盾的假设暗示着蛇的起源和关系有着截然不同的情况,具有广泛的生物学意义。

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