Indirect evidence suggests that non-avian theropod dinosaur ancestors of modern birds also had reduced genome sizes, consistent with endothermy and high energetic needs for running speed.
Evidencias indirectas suxiren que os dinosauros terópodos non aviarios antepasados das modernas aves tamén reduciran o tamaño dos seus xenomas, o que concorda coa endotermia e altas necesidades enerxéticas para correr velozmente.