Multiple Choice
What does Haikouichthys, a fossilized early vertebrate, have in common with other living vertebrates?
A) a spinal canal surrounded by vertebrae, which was supported by a notochord
B) dark spots at the front of the body, resembling eyes
C) a skull that may have held a primitive brain
D) all of the above
Correct Answer:
Verified
Correct Answer:
Verified
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