Dentzien-Dias, Paula C.; Poinar, George Jr.; de Figueiredo, Ana Emilia Q.; Pacheco, Ana Carolina L.; Horn, Bruno L. D.; Schultz, Cesar L. (Public Library of Science, 2013-01-30)
Remains of parasites in vertebrates are rare from the Mesozoic and Paleozoic. Once most parasites that live in - or pass through - the gastrointestinal tract of vertebrates, fossil feces (coprolites) or even intestinal c ...