The Monhysterida are an order in the phylum Nematoda. Usually the stoma in Monhysterida is funnel shaped and lightly cuticularized, but it is sometimes spacious and heavily cuticularized and they always have protrusible teeth.
Monhysterida, belonging to the phylum Nematoda, are defined by their distinctive stoma morphology. This structure is characterized by its funnel shape and varying degrees of cuticularization, with protrusible teeth being a consistent feature.