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OpenStudy (anonymous):
At the end of which period on the geological time scale did the dinosaurs become extinct? A. Cretaceous B. Quaternary C. Tertiary D. Jurassic
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OpenStudy (shreehari499):
The dinosaurs become extinct in the Cretaceous Period..:)
OpenStudy (anonymous):
thx
OpenStudy (shreehari499):
wlcm!
OpenStudy (anonymous):
Oh this helps a lot! I thought it was Jurassic... Thank you!
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