(Class Ostracoda):
Posterior extension of carapace. (Syn. keel) [Cohen, Peterson, and Maddocks, in press].
(Class Ostracoda):
Posterior projection of valve border generally above midheight, or posteroventral, directed upward [McLaughlin, 1980].
(Class Ostracoda):
Posterior projection of valve margin. (posterodorsal, posteroventral and upwardly directed) [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.