Monhysterida

Monhysterida
Scientific classification
Kingdom:	Animalia
Phylum:	Nematoda
Class:	Chromadorea
Subclass:	Chromadoria
Order:	Monhysterida
Families
Aponchiidae Linhomoeidae Monhysteridae Scaptrellidae Siphonolaimidae Sphaerolaimidae Xyalidae incertae sedis

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. They are either simply spiral or circular.

...
Wikipedia