Assertion: pterygotid eurypterid | /r/CapableOf | make its assignment
Facets:
value: to pterygotus
type: TRANSITIVE-OBJECT
Source sentences:
text: The single specimen designated as P. siemiradzkii, a telson, has unusual and pronounced ridges that are not seen in any known species of Pterygotus, nor in any other genus of pterygotid eurypterids, which makes its assignment to Pterygotus questionable.