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Re: Crop for seed-eating found in Hongshanornis and Sapeornis
> Crop for seed-eating found in Hongshanornis and Sapeornis
> The official article has not been posted yet on the
> Proceedings of the National Academy of Sciences website.
> Here are links to a couple of articles about the findings.
The article states: "The authors also identified a muscular gizzard
in _Hongshanornis_, giving it essentially a modern avian digestive
system. _Sapeornis_ and _Hongshanornis_ are two evolutionarily distant
lineages, indicating that their crops evolved independently as a
specialized seed-eating adaptation, the authors report."
I'm very much looking forward to this paper. For one thing, it will
presumably address why the crop didn't just evolved once in a common
ancestor of _Sapeornis_ and _Hongshanornis_, instead of evolving
independently. After all, _Jeholornis_, which had a crop for
seed-eating, was basal to both sapeornithids (omnivoropterygids) and
Anyway, I'll W4TP before shooting my mouth off.