Two hominid fossils are found in the same rock strata in caves about 10 kilometers apart in france. after radioactive dating, both are found to be about 150,000 years old. what else should be done before they are assigned to the same species? a. excavate deeper rock layers. b. look for evidence of tool use. c. find more fossils in both caves. d. compare anatomical structures.

The correct answer will be option D.

Explanation:

Hominids are the species of a large group of primates genus called Homo. The history of this genus dates back about 2.5 million years ago based on the fossils found.  

In the given question to assign the species taxon to the new fossils, the study of fossils has to be done more deeply to check whether they belong to the same species or not. This could be done by studying their anatomical features in detail that is studying their bones in detail and comparing them.

Thus, option D is the correct answer.