Assertion: plesiosaur's limb | /r/CapableOf | evolve into four long flippers
Facets:
Source sentences:
text: Their limbs had evolved into four long flippers, which were powered by strong muscles attached to wide bony plates formed by the shoulder girdle and the pelvis.
text: Their limbs had evolved into four long flippers, which were powered by strong muscles attached to wide bony plates formed by the shoulder girdle and the pelvis.