Ostracoderm

Ostracoderms are the armored jawless fish of the Paleozoic. The term does not often appear in classifications today because it is paraphyletic or polyphyletic, and thus does not correspond to one evolutionary lineage. However, the term is still used as an informal way of loosely grouping together the armored jawless fishes.


Ostracoderms are the armored jawless fish of the Paleozoic. The term does not often appear in classifications today because it is paraphyletic or polyphyletic, and thus does not correspond to one evolutionary lineage. However, the term is still used as an informal way of loosely grouping together the armored jawless fishes.
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