Question

What characteristics of fossils are most useful in correlating sedimentary rock layers?

Answer 1

The characteristics of fossils that are most useful in correlating sedimentary rock layers are:

Wide geographic distribution but limited to a particular formation.

Step-by-step explanation:

the reason behind this answer is because the correlation of sedimentary rock layers requires a geographic distribution large enough to preserve all the fossil elements. However, it requires to be only a zone delimited to the body of fossilization because otherwise, it could contain elements from another fossil.

Answer 2

This question had choices. They are the following:
(1) Limited geographic distribution but found in many rock formations
(2) Limited geographic distribution and limited to a particular rock formation
(3) Wide geographic distribution but limited to a particular rock formation
(4) Wide geographic distribution and found in many rock formations

My answer is: 3) Wide geographic distribution but limited to a particular rock formation.