Seductorithyris, Sandy & Hryniewicz & Hammer & Nakrem & Little, 2014

Sandy, Michael R., Hryniewicz, Krzysztof, Hammer, Øyvind, Nakrem, Hans Arne & Little, Crispin T. S., 2014, Brachiopods from Late Jurassic-Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard, Zootaxa 3884 (6), pp. 501-532 : 522

Genus Seductorithyris gen. nov.

Diagnosis. Round outline, with the dorsal valve almost circular. Profile equi- to gently ventribiconvex. Smooth shell with growth lines. Erect beak. Ventral valve umbo keeled. Lateral commissure straight, anterior commissure rectimarginate. Internal structures: cardinal process present, flat/horizontal and wide hinge plates deflect dorsally, crural bases develop on inner margin of hinge plates, clubbed and weakly deflected dorsally. Transverse band curved, low-arched, and approximately at mid-point of brachidium, anterior flanges long.

Etymology. For the deceptive way that homoeomorphy among brachiopods may mask their affinities (deceiver—latin seductor).

Occurrence. Uppermost Ryazanian of Spitsbergen.

Type species. Seductorithyris septemtrionalis sp. nov.