The scheme of Jairajpuri (1992), excludes the mononchs (an order of nematodes), alaims (Alaimida) and diphtherophorids (Triplonchida); and with the advent of molecular phylogenetic analysis, a further reorganisation has been necessary.
The scheme shown here is that of Jairajpuri (1992), which excludes the mononchs, alaims (Alaimida) and diphtherophorids (Triplonchida). Mononchida is an order of nematodes. With the advent of molecular phylogenetic analysis, a further reorganisation has been necessary. 
