Evidence of predation on Cretaceous sea stars from north-west Germany



Asteroids and asteroid ossicles of the Late Cretaceous White Chalk of north-west Germany were examined for evidence of predation. Bite marks of fishes were commonly found on larger ossicles and on one entirely preserved specimen of Recurvaster polyplacus. On ossicles of Pycinaster magnificus, tooth marks show evidence of serration, probably by the galeoid shark Squalicorax. Predation of durophagous fishes is obviously size-related, because regurgitated pellets contain exclusively ossicles of small asteroids.