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hypsilophodontian monophyly

Anybody for moving on to a new topic, such as: hypsilophodontian monophyly: yay or nay?<<<

Nay! The hypsilophodontia, as traditionally used, is just a waste-basket taxa that includes dinosaurs which are 1) small, and 2) not theropods (troodonts aside... :p ).

Just to get you started ;-)


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