Conchostracan valve bearing rib(s), chiefly applicable to Leaiidae [Moore and McCormick, 1969].
Having a carina, keeled [Butler, T.H.].
(Order Diplostraca):
Valve bearing rib(s) [McLaughlin, 1980].
(Order Isopoda):
Having one or more carinae or acute ridges [Kensley and Schotte, 1989].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.