Akademik

biformes
Carapaces reflecting sexual dimorphism (e.g., Conchostraca), marked by differing valve proportions for each sex of same species (DADAY); a given species may have carapaces that are "biformes." [Moore and McCormick, 1969].
Carapaces reflecting sexual dimorphism (e.g., Conchostraca), marked by differing valve proportions for each sex of the same species [McLaughlin, 1980].

Crustacea glossary. . 2011.