General organizations of cyclostomata
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The cyclostomata evolved oxygen transport hemoglobin independently from the jawed vertebrates .A thymus and spleen is absent in both hagfishes and lampreys ...Brachial basket (reduced hagfishes)is attached to the cranium
Phylum :chordata
Superclass:cyclostomata,dumeril
subphylum:vertebrate
kingdom:Animalia
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OKK
Phylum :chordata
Superclass:cyclostomata,dumeril
subphylum:vertebrate
kingdom:Animalia
HOPE THIS ANSWER WILL HELP YOU
OKK
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