Andrew K. Rindsberg wrote:
>
> Dear Palaeoconchlers,
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> Oysters are useful because they are conspicuous, common fossils that
> evolved fairly rapidly in the Cretaceous and Tertiary Periods. They lived
> mainly in brackish to fully marine shallow-water environments.
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Hello!
 
Hi,
 
Interesting. How are they distributed across the Cretaceous/Tertiary
boundary (K/T)? I suppose they survived the mass extinction?
 
Later,
 
Emilio Jorge Power