https://www.sciencenews.org/article/fossilized-poop-bears-tooth-marks
Fossilized poop bears tooth marks
Aug 8, 2019 - Shark-bitten fecal matter probably came from an assault on an ancient croc.
fossilized poopbears toothmarks
https://www.livescience.com/26738-ancient-tapeworms-fossilized-shark-poop.html
Ancient Tapeworms Found in Fossilized Shark Poop | Live Science
Jan 30, 2013 - Tapeworm eggs found in ancient shark poop suggests these parasites may have plagued animals for much longer than previously thought, scientists find.
ancienttapewormsfoundfossilizedshark