Assertion: dinosaur's ancestor | /r/HasProperty | every animal
Facets:
Source sentences:
text: There are some tell-tale characteristics of the hind limbs that allow experts to separate dinosaurs from non-dinosaurs going all the way back to the earliest species, Sues says, but the big picture view is that if you take Triceratops in one hand and a pigeon in the other and follow those two back to their last common ancestor, every animal that falls within that group counts as a dinosaur and shares certain traits in common.