"About 465 million years ago, an armored critter resembling a sea roach died near what is now Prague. The final meal of this animal—a trilobite—still sat in its guts as sediment buried its body in the sea floor of an ancient Paleozoic sea. There, it remained entombed for ages. Now, scientific sleuths have deduced the contents of this meal, providing the first direct evidence of the diet and lifestyle of this primal and iconic group of arthropods."
https://www.science.org/content/article/scientists-reveal-half-billion-year-old-last-supper
https://www.science.org/content/article/scientists-reveal-half-billion-year-old-last-supper