Assertion: turtle's fossil history | /r/CapableOf | become easier to read
Facets:
Source sentences:
text: By the late Jurassic, turtles had radiated widely, and their fossil history becomes easier to read.
text: By the Upper Jurassic, turtles had radiated widely, and their fossil history becomes easier to read.
text: By the Upper Jurassic, turtles had radiated widely, and their fossil history becomes easier to read.