cambrian pikaia extinct chordate |
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| navigate by keyword : animal aquatic art arthropod british burgess cambrian canada carnivore carnivorous chordate columbia creature era evolution extinct extinction fish genus gracilens illustration image life lobes marine nature organism paleo paleozoic period picture pikaia prehistoric primeval primitive sea shale small species swimming themes vertebrate |
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| Pikaia was an carnivorous arthropod marine fish that lived during the Cambrian Period |
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