SME
Historical Geology · Problem type
Body fossils and trace fossils
Use this for “Dinosaur footprints in mudstone and a snail shell in limestone: which is a body fossil and which a trace fossil?”
Sort
Is it the organism, or a sign of what it did?
Tap a card, then tap its group.
Assumptions
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A body fossil keeps part of the organism itself, or its exact shape: shell, bone, wood, a carbon film, a mold or cast.
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A trace fossil records what the organism did while alive: walking, burrowing, eating or digesting.
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