At the end of the Cambrian Period, fossil evidence indicated that:
A.) a great adaptive radiation of amphibians occured
B.) amphibian species reached their greatest number
C.) most amphibian species became extinct
d.) amphibians first appeared
A.) a great adaptive radiation of amphibians occured
B.) amphibian species reached their greatest number
C.) most amphibian species became extinct
d.) amphibians first appeared