the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Nematoda (phylum)
Chromadorea (class)
Rhabditida (order)
Rhabditidae (family)
Caenorhabditis (genus)
[hide inferior taxa]
Caenorhabditis briggsae (species)
Caenorhabditis drosophilae (species)
Caenorhabditis elegans (species)
Caenorhabditis japonica (species)
Caenorhabditis plicata (species)
Caenorhabditis remanei (species)
Caenorhabditis sp. (species)
Caenorhabditis vulgarensis (species)
Caenorhabditis vulgaris (species)