Question

In this drawing, which layer of rock is the oldest?

a diagram showing six layers of rock with a dike cutting through them; layer 1: trilobite; layer 2: ammonite; layer 5: plant; layer 6: trilobite and armored fish

A.
layer 1
B.
layer 2
C.
layer 5
D.
layer 6

Answer 1

Layer 6 is the oldest layer of rock

• Ammonites are the fossils of the cephalopods which were extinct over 60 million year ago.
• Plant fossils are the plant species that were died over a million years of time span.
• However, the layer 6 of trilobite were found in the Cambrian age dating over 505 million years ago.
• Armored fish was found in the Devonian period between 400 - 300 million years ago.

Answer 2

Answer: layer 6.

Explanation:

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