Assertion: plesiosaur's skeleton | /r/AtLocation | early 1800s
Facets:
value: by mary anning
type: OTHER
Source sentences:
text: The first plesiosaur skeletons were found in England by Mary Anning, in the early 1800s.
text: The first plesiosaur skeletons were found in England by Mary Anning, in the early 1800s, and were amongst the first fossil vertebrates to be described by science.
text: The first plesiosaur skeletons were found in England by Mary Anning , in the early 1800s, and were amongst the first fossil vertebrates to be described by science.