Question

What is cyclostomata ?
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Answer 1

➡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 as teeth, and branchial arches that are internally positioned instead of external as in jawed fishes.

Answer 2

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 as teeth, and branchial arches that are internally positioned instead of external as in jawed fishes.[1] The name Cyclostomata means "round mouths".[2][3]It was named by Joan Crockford Beattie[citation needed]

Cyclostomes

Temporal range: Lochkovian - Recent 419.2–0 Ma

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Sea lamprey from Sweden

Scientific classification

Kingdom:

Animalia

Phylum:

Chordata

Subphylum:

Vertebrata

Superclass:

Cyclostomata

Duméril, 1806