Nautiloids - Flashcards in A Level and IB Geology

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Created by: Hannah
Created on: 19-11-12 05:36




		7						3

										4				8


				1		2



5


							6

Across

1. Inner coils are hidden by the last one with a narrow unblicus (8)
5. Earlier coils can be seen with a wide umbilicus (common in ammonoides) (7)
6. What is the narrow tube conecting the older chambers (9)
7. Their phylum (8)

Down

2. Why are Nautiloids useful zone fossils (6)
3. Their class (11)
4. Where did the conical shell originate (11)
8. shell is coiled into a single plane (11)

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