kristin14
kristin14
24-02-2017
Biology
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what did placoderms look like?
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Аноним
Аноним
24-02-2017
Placoderms had heavy armour that covered their head and thorax. The rest of the body was covered with small bony scales or was without dental armour.
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prettygirl6816
prettygirl6816
24-02-2017
a fish with a beak looks like a shark
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