Assertion: lamprey | /r/HasAspect | tooth plates
Facets:
Source sentences:
text: Lampreys have tooth plates on the top of a tongue-like piston cartilage, and the hagfish have a fixed cartilagous plate on the floor of its mouth with groves that allows tooth plates to slide backwards and forwards over it like a conveyor belt, and are everted as they move over the edge of the plate.