Definitions
Occipital notch
- Angulated indentation at rear of cephalon. [McLaughlin, 1980]
- Angulated indentation at rear of head in some conchostracans. [Moore and McCormick, 1969]
- (Taxon-specific: Order Diplostraca) Notch-like depression in dorsal posterior region of head. May be preceded by occipital point. (shallow and inconspicuous, acute and pronounced, deeply cleft). [Stachowitsch, 1992]