Akademik

Tooth-like structure, either in gastric mill of cardiac stomach or referring to blunt, relatively broad projection on outer surface of carapace. In cardiac stomach, one may distinguish one median and two lateral teeth. On carapace, one may distinguish, according to position and according to group, cardiac, gastric, lateral, orbital, pregastric, and rostral teeth [Stachowitsch, 1992].

One of typically six larger tooth-like projections along telson margin; according to position (from midline outward) one may distinguish submedian, intermediate, and lateral teeth. May also refer to teeth on distal segments (propodus, dactyl) of thoracopods [Stachowitsch, 1992].

Hinge structure: tooth-like (typically anterior or posterior) element projecting beyond hinge margin. Fits into socket of opposite valve. (bifid, conical, elongate, hemispherical, lobate, multilobate, reniform, simple, smooth, trilobate). (Syn. hinge tooth) [Stachowitsch, 1992].