archaeological site of Menez-Dregan in Brittany, France, dated 300,000-500,000
years-old, paleoparasitological analysis of cave deposits led to the detection
of well-preserved helminth eggs, which morphology and morphometry pointed to the
diagnosis of Toxocara canis
eggs, a parasite of carnivore mammals.
Paleolithic remains suggested a parasitism of the hyena Crocuta spelaea
or other canids that inhabited the region.