Living members of the ____ lineage include the sharks, skates, and rays, all of which have skeletons made entirely of cartilage.
A) Petromyzontoidea
B) Chondrichthyes
C) Actinopterygii
D) Myxinoidea
E) Sarcopterygii
Correct Answer:
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Q24: The fossil record shows that the jawed
Q25: The living members of the _ lineage,
Q26: Several lineages of extinct _ were jawless
Q27: Which lineage has the largest number of
Q28: Living members of the _ lineage have
Q30: The parasitic lampreys, living members of the
Q31: Which structure is a covering for the
Q32: Fossil tooth parts of extinct _ suggest
Q33: Two extant species of coelacanths and six
Q34: A key trait that distinguishes gnathostomes from
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