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Why Do Some Biologists Use the Name Craniata Instead of the Name

Question 127

Multiple Choice

Why do some biologists use the name Craniata instead of the name Vertebrata?


A) Hagfish have a cranium but no vertebrae.
B) Hagfish are too different from Cephalochordates to be included in that group.
C) Hagfish are not represented by very many species, therefore cannot be given their own taxonomic grouping.
D) Hagfish are understudied, therefore can only be grouped with other taxa based on their lack of characteristics.

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