devonian xenacanthus fish |
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| navigate by keyword : animal aquatic carnivorous creature devonian environment era evolution extinct extinction fish flippers giant gigantic illustration image large life marine mesozoic monster nature ocean organism palaeozoic paleoart picture powerful prehistoric primeval primitive sea shark swimming teeth themes triassic undersea underwater vertebrate xenacanthus |
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| Xenacanthus is a prehistoric shark from the Devonian and Triassic Periods of Earth's history. |
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