Search Result for "form genus":
Wordnet 3.0

NOUN (2)

1. (biology) an artificial taxonomic category for organisms of which the true relationships are obscure;

2. an artificial taxonomic category established on the basis of morphological resemblance for organisms of obscure true relationships especially fossil forms; 



WordNet (r) 3.0 (2006):

form genus
    n 1: (biology) an artificial taxonomic category for organisms of
         which the true relationships are obscure
    2: an artificial taxonomic category established on the basis of
       morphological resemblance for organisms of obscure true
       relationships especially fossil forms