Assertion: eurypterid's pair | /r/HasProperty | modified into swimming paddles
Facets:
Source sentences:
text: It had 4 pairs of walking legs, a fifth pair modified into swimming paddles, and a pair of large chelae (pincers) for subduing prey.
text: Pterygotus had 4 pairs of walking legs, a fifth pair modified into swimming paddles, and a pair of large pincers for subduing prey.
text: It had 4 pairs of walking legs, a fifth pair modified into swimming paddles, and a pair of large chelae (pincers) for subduing prey.