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avatar_Halichoeres

A probably herbivorous acanthomorph fish from the Cretaceous of Morocco

Started by Halichoeres, June 01, 2018, 10:06:16 PM

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Halichoeres

June 01, 2018, 10:06:16 PM Last Edit: June 01, 2018, 10:07:04 PM by Halichoeres
A gut trace has been preserved of the Cretaceous freshwater acanthomorph (perchlike fish) Spinocaudichthys oumkoutensis. It's long and convoluted, suggesting that the fish was at least partially herbivorous (carnivores have shorter, straighter intestines). Acanthomorphs are almost certainly primitively carnivorous, so advanced teleosts were evidently already diversifying ecologically before the K-Pg.



Paper (open access):https://www.nature.com/articles/s41598-018-26744-3
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#1
June 02, 2018, 01:21:47 AM
I'm so impressed by the amount of details in some fossils like this that keep traces of soft tissue. It's fascinating.

ZoPteryx

#2
June 03, 2018, 06:48:04 AM
That preservation though...  :o

Newt

#3
June 06, 2018, 06:53:28 PM
Nice! Looks a lot like the guts in my beloved Chrosomus daces, which are largely algivorous.

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