Assertion: eurypterid | /r/HasAspect | paddle
Facets:
value: on their sixth appendages for locomotion
type: PURPOSE
Source sentences:
text: Most eurypterids possessed paddles on their sixth appendages for locomotion, while more some of the more heavily built genus lacked these paddles and instead lived on the substrate.
text: Some eurypterids possess paddles which many workers have regarded as an adaptation for swimming (others have suggested that they were used in digging).