Assertion: frilled dinosaur | /r/CapableOf | use their frills
Facets:
value: for species recognition
type: PURPOSE
value: for mating displays
type: PURPOSE
Source sentences:
text: Initially, palaeontologists interpreted the frills and horns as systems of defense; however, now it is believed that the frilled dinosaurs used their frills and horns for species recognition, mating displays, and possibly to engage in ritualistic or territorial battles with members of their own species (like moose smash antlers in a rut).