Definition that contains taxonomic category
- tribe (biology) a taxonomic category between a genus and a subfamily
- variety (biology) a taxonomic category consisting of members of a species that differ from others of the same species in minor but heritable characteristics
- form division an artificial taxonomic category for organisms of which the true relationships are obscure
- subfamily (biology) a taxonomic category below a family
- form family (biology) an artificial taxonomic category for organisms of which the true relationships are obscure
- form genus an artificial taxonomic category established on the basis of morphological resemblance for organisms of obscure true relationships especially fossil forms
- form genus (biology) an artificial taxonomic category for organisms of which the true relationships are obscure
- subclass (biology) a taxonomic category below a class and above an order