Institut Català de Paleontologia, Edifici ICP, Universitat Autònoma de Barcelona, Campus de Bellaterra, Barcelona, Spain.
J Evol Biol. 2011 Sep;24(9):2040-54. doi: 10.1111/j.1420-9101.2011.02338.x. Epub 2011 Jun 24.
Temnospondyls were a successful group of early tetrapods that lived during the Palaeozoic and Mesozoic periods. Different ecomorphotypes were present (terrestrial, amphibious and fully aquatic) with a wide range of lifestyles. Herein, we analysed several clades of temnospondyls using geometric morphometrics, Finite Element Analysis, and comparative phylogenetic analysis. Some temnospondyli clades were 'crocodilomorph' feeding analogues. The skull analysis reveals a concordance between form and feeding function, in amphibious and fully aquatic feeders. The form of terrestrial feeders could be consequences of adaptative or phylogenetical constraints. Basal temnospondyls, as edopoids, were able to leave the water and feed on land. Eryopids continued as terrestrial feeders, although some members showed a shift to increased aquatic feeding. The aquatic environment was especially occupied by archegosaurs during the Permian. After the Permo-Triassic extinction, trematosaurs and capitosaurs returned to the aquatic environment and their members were amphibious and fully aquatic feeders until their disappearance.
迷齿螈类是一类成功的早期四足动物，生活在古生代和中生代。它们具有不同的生态形态（陆生、两栖和完全水生），生活方式多样。本文采用几何形态测量学、有限元分析和系统发育比较分析的方法对一些迷齿螈类进行了分析。一些迷齿螈类群是“鳄形类”的类似食性者。头骨分析表明，在两栖和完全水生的食者中，形态与食性功能之间存在一致性。陆生食者的形态可能是适应或系统发育约束的结果。基干迷齿螈类，如 edopoids，能够离开水并在陆地上进食。鳄螈类继续作为陆生食者，尽管有些成员表现出向更多水生食性的转变。在二叠纪时期，水生环境特别被弓鲛目所占据。在二叠纪-三叠纪灭绝之后，三列齿兽类和原鳄类返回水生环境，它们的成员是两栖和完全水生的食者，直到它们消失。
