Ancient Parasites That Infested the Guts of Dinosaurs: Fossilized Feces Reveal the History of Parasitism

Fossilized feces preserve evidence of ancient parasites that infected an aquatic predator over 200 million years ago, according to a study published August 9, 2023, in the open-access journal PLOS ONE by Thanit Nonsrirach of Mahasarakham University, Thailand, and colleagues.