| 21. | These mammal-like synapsids lived during the Late Permian period, approximately 255 million years ago.
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| 22. | These deposits date from the Devonian through the Permian Periods.
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| 23. | During the Permian Period, roughly 270 to 225 million years ago, the Appalachian Orogeny began.
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| 24. | It lived in what is now Central and Western Europe in the Early Permian Period.
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| 25. | In the Permian period, the Zion and Kolob area was a relatively flat same elevation.
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| 26. | During the Permian period, the Earth teemed with life.
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| 27. | This small herbivorous animal was one of the most successful synapsids in the Permian period.
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| 28. | The stone was analyzed to be about 270 million years old from the Permian period.
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| 29. | However, none of these others survived the crisis at the end of the Permian period.
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| 30. | By the Permian period the sea had left completely.
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