Based on the fossil, the correct statement is that the The shell evolved after the fern because the oldest fossils are usually at the bottom.
Therefore option D is correct.
<h3>What are Fossils?</h3>
A fossil refers to any preserved remains, impression, or trace of any once-living thing from a past geological age. Some examples of fossils include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood, oil, coal, and DNA remnants.
There are four main types of fossils, which are all formed in a different way, which are conducive to preserving different types of organisms. They include the following
- Mold fossils
- Cast fossils
- Trace fossils
- True form fossils.
According to the question, the correct statement is that the shell evolved after the fern plant because the oldest fossils are usually at the bottom.
The study of fossils is refers to as Paleontology.
Learn more about fossils at brainly.com/question/11829803
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