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Re: Ornithurine diversity
...and possibly why competition/predation is a better explanation
for enantiornithine extinction in some ecosystems?
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.