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avatar_Halichoeres

Some paravians had birdlike guts

Started by Halichoeres, September 23, 2018, 02:51:45 PM

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Halichoeres

September 23, 2018, 02:51:45 PM
It's similar to what you'd predict based on phylogenetic position, but these fantastic specimens of Anchiornis show that their gizzards produced gastric pellets of indigestible material. This probably evolved as a way to avoid intestinal blockages but it also has the effect of reducing weight after a meal more quickly than if you pass the matter through the entire gut, and could be one way paravians were pre-adapted for flight.

Open access: https://www.nature.com/articles/s41598-018-32202-x
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