Assertion: eurypterid | /r/CapableOf | become following their appearance
Facets:
value: during the ordovician
type: TEMPORAL
Source sentences:
text: Following their appearance during the Ordovician, eurypterids became major components of marine faunas during the Silurian, from which the majority of eurypterid species have been described.
text: Following their appearance during the Ordovician, eurypterids became major components of marine faunas during the Silurian, from which the majority of eurypterid species have been described.