If two different species of fish fossils were found in two different layers of sedimentary rock,what might one infer about the specimens?
A)They died at the same time
B)The two species are unrelated
C)The species in the higher layer evolved from the species in the lower layer
D)The species in lower layer died first
E)The species in the higher layer died first

Question

Quizplus · Accepted Answer

The principle of superposition in geology states that in a sequence of undeformed sedimentary rocks, the oldest layers are at the bottom and the youngest ones are at the top. Therefore, if two different species of fish fossils were found in two different layers, the species in the lower layer would have died before the species in the higher layer.

If Two Different Species of Fish Fossils Were Found in Two