DINOSAUR MONOPHYLY AND A NEW CLASS OF VERTEBRATES
DINOSAUR MONOPHYLY AND A NEW CLASS OF VERTEBRATES
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DOI：
10.1038/248168a0
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发表时间：
1974-01-01
期刊：
影响因子：
64.8
通讯作者：
GALTON, PM
中科院分区：
文献类型：
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作者：
BAKKER, RT;GALTON, PM
传统上，恐龙被归类为两个或三个独立的爬行动物类群，属于初龙亚目。但是，来自骨骼组织学、运动动力学和捕食者/猎物比率的证据强烈表明，恐龙是具有高有氧运动代谢的恒温动物，在生理上更像鸟类和爬行哺乳动物，而不是任何现存的爬行动物1 -8。最近，奥斯特罗姆有力地论证了鸟类是恐龙的直系后代，并从恐龙那里继承了高运动代谢。在这里，我们提出的证据表明，恐龙是一个单一的，单系群，和关键的进展，恒温和高运动代谢是理由删除恐龙从爬行动物和鸟类放在一个新的类，恐龙。
TRADITIONALLY dinosaurs are classified as two or three separate, independent groups of reptiles in the Subclass Archosauria. But evidence from bone histology, locomotor dynamics, and predator/prey ratios strongly suggest that dinosaurs were endotherms with high aerobic exercise metabolism, physiologically much more like birds and cursorial mammals than any living reptiles1–8. Recently Ostrom has argued forcefully that birds are direct descendants of dinosaurs and inherited high exercise metabolism from dinosaurs1,8. Here we present evidence that dinosaurs are a single, monophyletic group, and that the key advancements of endothermy and high exercise metabolism are justification for removing dinosaurs from the Reptilia and placing them with birds in a new class, the Dinosauria.