Hypsilophodontidae
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Hypsilophodontidae is a traditionally used family of ornithopod dinosaurs, generally considered invalid today. It historically included many small bodied bipedal neornithischian taxa from around the w
Skeleton of Laosaurus consors as drawn by Othniel Marsh (since named Othnielosaurus and later Nanosaurus)
Skeleton of Thescelosaurus edmontonensis in display as preserved
Skeleton of Convolosaurus (the Proctor Lake hypsilophodont)
Thescelosauridae
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Thescelosauridae is a clade of neornithischians from the Cretaceous of East Asia and North America. The group was originally used as a name by Charles M. Sternberg in 1937, but was not formally define
