[[Image:Ancylostoma.jpg|thumb|right|150px|''Ancylostoma'' - Courtesy of the Laboratory of Parasitology, University of Pennsylvania School of Veterinary Medicine]]
*Like the Strongyloidea, except the head is bent dorsally.
*Like the Strongyloidea, except the head is bent dorsally.
*All have a large buccal cavity with teeth and/or cutting plates.
*All have a large buccal cavity with teeth and/or cutting plates.