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Unit 12 Change Over Time. How the fossil record is used to attempt to show evidence of animals changing over time. Seasons can show change over time. Skeleton of a dog. Skeleton of a bulldog. Law of Superposition. Newer. Older. Coelacanth as a fossil . Coelacanth alive today. .
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Unit 12Change Over Time How the fossil record is used to attempt to show evidence of animals changing over time.
Law of Superposition Newer Older
Some thoughts…. • Uniformitarianism doesn’t explain how we find soft-tissue animals in the fossil record. • Slow deposition over time simply takes too long • Soft bodied animals like jellyfish would be either rotted away or eaten by scavengers. • Catastrophism can explain how a jellyfish can be fossilized.
In order for a fish giving birth to fossilized, it has to be covered instantly with sediments, at the moment it occurs.
In order for a fish eating a fish to fossilized, it has to be covered instantly, at the moment it occurs.
This is a trilobite and the tracks it made just prior to be covered up by a massive and sudden amount of sediments!
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