[Piotr Bajdek]

Here goes the first paper… Feel free to ask me questions. 🙂

Bajdek, P., Szczygielski, T., Kapuścińska, A., and Sulej, T. in press. Bromalites from a turtle-dominated fossil assemblage from the Triassic of Poland. Palaeogeography, Palaeoclimatology, Palaeoecology. https://doi.org/10.1016/j.palaeo.2019.02.002

Highlights

• Studied coprolites provide information on a turtle-dominated Late Triassic ecosystem.
• Coprolites were produced by sharks, turtles, theropods, and a sizable herbivore.
• Carnivores fed predominantly on fish in this fluvial environment.
• The turtle Proterochersis porebensis was likely omnivorous and semiaquatic.
• Life habits of early turtles were similar to those typical of extant taxa.

[Piotr Bajdek]

Thanks for the info! Sure, I will contact you by e-mail.

[Piotr Bajdek]

Very interesting, thanks for sharing, @giovanni-rios! Some time ago, I read a brief paper on dinosaur footprints from Bolivia but I can’t find it on my disk now. However, the new paper you shared mentions more than just footprints, as the Molino Formation has yielded vertebrate coprolites and teeth. The co-occurrence of dinosaur footprints and coprolites is particularly interesting to me personally, but the coprolites from the picture might have been produced by crocodiles, turtles, or even fish.

[Piotr Bajdek]

You’re welcome! When I first found these fossils as a kid, I thought these were fish vertebrae!

Just search for crinoid stem fossils in Google Images. For example, this specimen looks just identical to your second picture: https://ukfossils.co.uk/2007/11/15/west-angle-bay/crinoid-stem-impression/

[Piotr Bajdek]

Frontiers in Ecology and Evolution

Frontiers in Earth Science

The name of the journal Acta Palaeontologica Polonica was mistyped too.

[Piotr Bajdek]

Nice list and useful. I would be happy to help with identification of possible coprolites (Trace Fossils).

[Piotr Bajdek]

I agree with @jkallmeyer. These specimens resemble crinoids rather than corals or sponges.

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