| 11. | The earliest marine reptiles arose in the Permian period during the Paleozoic era.
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| 12. | Poor quality fossil evidence suggests an origin in the Permian Period.
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| 13. | This genus is known from the Ordovician to the Permian periods.
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| 14. | But evidence for any such calamity in the Permian Period has been lacking.
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| 15. | The third extinction was about 245 million years ago, during the Permian Period.
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| 16. | Throughout the Permian period, the synapsids included the dominant carnivores and several important herbivores.
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| 17. | The "'Geology of Kansas "'encompasses the geologic history of the Pennsylvanian and Permian periods.
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| 18. | It lived in the Permian period, specifically the Wuchiapingian Stage.
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| 19. | They were large herbivores that flourished during the Permian period.
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| 20. | The evolutionary explosion that began in the Carboniferous ended in the ensuing Permian Period.
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