Assertion: cretaceous plesiosaur | /r/HasAspect | similar concave vertebrae
Facets:
value: deeply
type: MANNER
Source sentences:
text: Various researchers have used the species "Plesiosaurus" bernardi or "Cimoliasaurus" bernardi for incomplete remains of European Cretaceous plesiosaurs that have similar deeply concave vertebrae, though none of these authors accepted Cope's new generic name.