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Re: Ornithurine diversity

> How could it possibly do that? It's Campanian, at least
> 10 million years 
> older than the K-Pg boundary, and it's just a few
> coracoids. And last but 
> not least, the complete absence of enantiornithean
> coracoids (so far) makes 
> it impossible to see how the diversity and abundance of eu-
> vs 
> enantiornitheans changed over time.

Not to forget that most or even all ornithurines from that region bought the 
farm 10 million years later too, making the point of pre-boundary competition 
somewhat moot.


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