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Re: New refs




Superimposing
these findings onto a phylogeny of the Dinosauria suggests
that endothermy most likely evolved among the
Coelurosauria and, to a lesser extent, among the
Hypsilophodontidae, but not among the Stegosauridae,
Nodosauridae, Ankylosauridae, Hadrosauridae, Ceratopsidae,
Prosauropoda, and Sauropoda.

Considering "hysilophodontids" were the ancestral Iguanodontoids it seems rather strange they were endotherms while their descendants,hadrosaurs,weren't.

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