Assertion: bird's forelimb | /r/AtLocation | x. zhengi
Facets:
value: a species thought
type: OTHER
Source sentences:
text: Many features, such as the presence of feathers, three-fingered hands, a wishbone, and long, robust forelimbs, which are often considered diagnostic of birds, also appear in X. zhengi, a species thought to have lived some five million years before Archaeopteryx, as well as others.