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.
The Monhysterida order within the Nematoda phylum is known for its diverse stoma characteristics.  While typically funnel-shaped and lightly cuticularized, they can also exhibit larger, heavily cuticularized stomata. Protrusible teeth are a defining feature of this group.