Anatomy lecture 3

Question 1

List characteristics and give example of this class of pieces:

Answer 1

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Question 2

List characteristics and give example of this class of pieces: Acanthodii:

Answer 2

• Good example is Climatius
• Most of the acanthodians were freshwater fishes but earliest members were marine fishes
• Numerous paired and unpaired spines
• Lack of large dermal scales