Kingdom Animalia Subphylum Rhynchonelliformea Order Terebratulida Rank Genus | Phylum Brachiopoda Class Rhynchonellata Suborder Terebratellidina | |
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Similar Argyrotheca, Gwynia, Crania, Terebratulida, Discinisca | ||
Dallina is a genus of small to average size lampshells (maximum 35 millimetres or 1.4 inches long). It is known since the Miocene.
Contents
Coffee talk with francesca and dallina
Description
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.
References
Dallina Wikipedia(Text) CC BY-SA