Question

Write about the group Craniata.
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Answer 1

Answer:

your answer.........

Explanation:

A craniate is a member of the Craniata (sometimes called the Craniota), a proposed clade of chordate animals with a skull of hard bone or cartilage. Living representatives are the Myxini (hagfishes), Hyperoartia (including lampreys), and the much more numerous Gnathostomata (jawed vertebrates).[2][3] Formerly distinct from vertebrates by excluding hagfish, molecular and anatomical research in the 21st century has led to the reinclusion of hagfish, making living craniates synonymous with living vertebrates

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Answer 2

Craniata:

• They are sub division of Chordata

• They posses Notocord during embryonic period

• Vertebral column replaces notocord

• Ventral muscular heart

• Kidneys are present

• Pair appendages are mostly present

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Craniata is further devided into:

1. Aganatha and Ganatgostoma

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Aganatha:

• They don't have jaws

• Paired appendages are absent

ex:- members of Cyclostoma

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Ganatgostoma:

• Jaws are present

• Paired fins or limbs are present

Ex:- Fishes, Mammals, birds etc