| 11. | Much later, the exquisitely preserved placoderm fossils from Gogo reef changed the picture again.
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| 12. | Like other flattened placoderms, the phyllolepids were bottom-dwelling predators that ambushed prey.
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| 13. | The old placoderms did not have teeth at all, but had sharp bony plates in their mouth.
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| 14. | Newer research suggests that a branch of Placoderms was most likely the ancestor of present-day gnathostomes.
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| 15. | The first identifiable placoderms appear in the fossil record during the late Llandovery epoch of the early Silurian.
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| 16. | They showed that placoderms shared anatomical features not only with chondrichthyians but with other gnathostome groups as well.
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| 17. | As mentioned earlier, " Bothriolepis " is a genus placed within the placoderm order Antiarchi.
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| 18. | Placoderms were the first jawed fish; their jaws likely evolved from the first of their gill arches.
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| 19. | Before the event, oceans and lakes were dominated by lobe-finned fishes and armored fishes called placoderms.
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| 20. | "D . magnificus " is a large placoderm from the Frasnian Rhinestreet Shale of New York.
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