what is cyclostomata????
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Cyclostomes are jawless vertebrates. They are characterised by having an elongated eel-like body, circular mouth, slimy skin and are scaleless. They are ectoparasites or borers of other vertebrates. Petromyzon (Lamprey) and Myxine (Hagfish) are examples.
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Cyclostomata is a group of agnathans that comprises the living jawless fishes: *the lampreys and hagfishes.
Cyclostomata is a group of agnathans that comprises the living jawless fishes: *the lampreys and hagfishes.* Both groups have jawless mouths with horny epidermal structures that function like teeth, and branchial arches that are internally positioned instead of external as in jawed fishes.
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