Areas of Success 4

- spinal anatomy of amniotes
- ammonite aptychi(transformation of jaw to operculum)
- correlation between large carnivores, mammals and dinosaurs
- productid brachiopod Waagenoconcha abichi("snow-shoe" structure)

The "snow-shoe" structure prevents adult Waagenoconcha abichi from sinking into the soft mud on which it lives. Juveniles have "hooks" for hanging onto plants, until they develop "snow-shoes".

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