D7oidaliciaca1tubst D7oidaliciaca1tubst

14-12-2015
Biology

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Ichthyosaurs went extinct at the end of the:
Triassic Period
Permian Period
Jurassic Period
Cretaceous Period

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MonikaMole1421 MonikaMole1421

14-12-2015

Cretaceous Period. Fossils suggested that they were seen in the Mesozoic era and continue to thrive until they became extinct in the late Cretaceous with reasons still unknown.

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