| 11. | During the Cambrian period, Texas was covered by a sea.
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| 12. | The Kittatinny Valley was created during the late Ordovician period and the Cambrian period.
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| 13. | The island's geology was formed in the Cambrian Period and is rich with limestone.
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| 14. | There are volcanics and further sediments from the end of the Ediacaran and Cambrian periods.
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| 15. | It lived during the late Atdabanian stage, during the early part of the Cambrian Period.
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| 16. | They were likely major predators of the Cambrian period.
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| 17. | This faunal stage was part of the Cambrian Period.
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| 18. | The Kittatinny formation formed during the Cambrian period.
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| 19. | The caves consist of marbloid rocks from the Cambrian period, many of which exhibit scalloping patterns.
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| 20. | However, it was later found by Vacelet that sclerosponges occur in different classes of Cambrian period.
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