1. -Ascarids -hookworms and relatives-whipworms-heartworms-pinworms-lungworms-threadworms-misc

2. In earlier centuries, tapeworms and threadworms were regularly found in the intestine.

3. Aschelminthes - unsegmented worms: roundworms; threadworms; eelworms Nematoda, phylum Aschelminthes, phylum Nematoda animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals helminth, parasitic worm - worm that is parasitic on the intestines of vertebrates especially …