Assertion: plesiosaur | /r/HasProperty | marine reptile
Facets:
Source sentences:
text: Many speculated that the creature was a plesiosaur, a marine reptile that went extinct some 65.5 million years ago.
text: Plesiosaurs were marine reptiles that lived during the age of the dinosaurs.
text: This Hesperornis had survived a run-in with a plesiosaur: a marine reptile larger than a human being.
text: Anning also found the first Plesiosaur, another marine reptile.