(Onyx) (Onyx) is a biological genus in the family Desmodoridae and order Desmodorida.
Onyx dimorphus
Onyx ferox
Onyx perfectus
Onyx rugatus
Acanthopharyngoides
Acanthopharynx
Amphispira
Chromaspirina
Cinctonema
Crassolaimus
Desmodora
Eubostrichus
Ixonema
Laxonema
Laxus
Leptonemella
Metachromadora
Metadesmodora
Onyx
Paradesmodora
Parathalassoalaimus
Polysigma
Pseudomelachromadora
Robbea
Sigmophoranema
Spirinia
Squanema
Stilbonema
Xenonema