Dallina

Dallina is a genus of small to average size lampshells (maximum 35 mm long). It is known since the Miocene.

Small to large, triangular to subquadrangular in outline; rectimarginate to paraplicate; beak erect, without beak ridges; foramen small to large, mesothyrid, attrite, symphytium concave. Hinge teeth small, weak; pedicle collar very short. Cardinalia lamellar with excavate inner and outer hinge plates separated by narrow crural bases; inner hinge plates converging on median septum to form V-shaped septalium; cardinal process not differentiated; median septum low anteriorly, extending beyond midvalve; adult loop teloform.

File:Dallina septigera brachial.jpg|''Dallina septigera'', brachial valve, 24mm long, near the Philippines File:Dallina septigera pedicle valve.jpg|pedicle valve File:Dallina septigera anterior.jpg|anterior view File:Dallina septigera internal 2.jpg|interior view File:Dallina septigera lateral.jpg|lateral view