The current taxonomy version is ott3.6 (click for more information). See the OTT documentation for an explanation of the taxon flags used below, e.g., extinct
subclass Hirudinea ncbi:55824 (worms:2041, irmng:1182) (OTT id 1022151)
View this taxon in the current synthetic tree
life > cellular organisms > Eukaryota > Opisthokonta > Holozoa > Metazoa > Eumetazoa > Bilateria > Protostomia > Lophotrochozoa > Annelida > Clitellata