Approximately how old is a layer of rock containing Phacops fossils? A. 245 million years b. 400 million years c. 100 million years d. million years
A layer of rock containing Phacops fossils is approximately 400 million years old.
Question
Asked 10/3/2011 6:46:32 AM
Updated 7/14/2020 11:37:26 AM
0 Answers/Comments
This answer has been confirmed as correct and helpful.
Edited by
Masamune [7/14/2020 11:37:25 AM], Confirmed by
Masamune [7/14/2020 11:37:26 AM]
Rating
There are no new answers.