Assertion: vertebrate jaw | /r/AtLocation | the placoderm fish
Facets:
Source sentences:
text: The vertebrate jaw probably originally evolved in the Silurian period and appeared in the Placoderm fish which further diversified in the Devonian.
text: The vertebrate jaw probably originally evolved in the Silurian period and appeared in the Placoderm fish which further diversified in the Devonian.