Vertebrate Evolution

Vertebrate Evolution

The earliest vertebrates resembled hagfish and lived more than 500 million years ago. As other classes of fish appeared, they evolved traits such as a complete vertebral column, jaws, and a bony endoskeleton.

CK-12 (High School)

ESSENTIAL QUESTION:

How did vertebrates evolve from fish?
STANDARDS:
RST.1 - Analysis & Evidence, RST.4 - Key Terms

DEPTH OF KNOWLEDGE (DOK) LEVELS:

2,3
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