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Agnatha - Biocrawler (Site not responding. Last check: ) |
 | | Agnatha (Greek, "no jaws") is a superclass of jawless fish in the phylum Chordata, subphylum Vertebrata. |
 | | In addition to the absence of jaws, Agnatha are characterised by absence of paired fins; the presence of a notochord both in larvae and adults; and seven or more paired gill pouches. |
 | | Although a minor element of modern marine fauna, Agnatha were prominent among the early fish in the early Paleozoic. |
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