Register
When do the first land vertebrates appear in the geologic time scale?
154k views
18 votes
When do the first land vertebrates appear in the geologic time scale?

User Eldon Lesley
by
3.6k points

1 Answer

7 votes

Answer:

About 450 million years ago

User Alan Mc Kernan
by
3.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.6m questions

4.6m answers

Other Questions

Gibberellic acid stimulates the cells of germinating grass seeds to produce mrna molecules that code for hydrolytic enzymes. In this case the role of gibberellic acid can best be described as that of
Name three ecosystem services provided by biodiversity.
Climate change is a ___ environmental change
Cerebral aneurysm is most frequently the result of a. subarachnoid hemorrhage. b. subdural hemorrhage. c. meningitis. d. embolic stroke.
Which subsystems are most effected by this use of water
Link Copied!