Oxyurida

Rhabditida is an order of usually free-living microbivorous nematodes (roundworms) living in soil.

Genera include:
 * Bursilla (Mesorhabditis)
 * Caenorhabditis - of which C. elegans and C. briggsae have had their genomes deciphered
 * Cruznema
 * Enterobius (pinworms/threadworms) which are significant parasites
 * Heterorhabditis
 * Panagrellus which includes the microworm
 * Pelodera
 * Rhabditis
 * Steinernema
 * Strongyloides

Rhabditida Rhabditida Rhabditida Háďatká