Platystrophiinae

OBS: [Les Brachiopodes de la] sous-famille des Platystrophiinae (...) [sont] Biconvexes [et ont des] grosses côtes. Ordovicien moyen - Silurien terminal (...)

OBS: [Brachiopods of the] subfamily Platystrophiinae (...) [are] costate to costellate, with large subequal interareas and wide hinge lines, [the] dorsal median fold [is] strongly developed; [the] brachiophore bases [are] convergent. M. Ord. - U. Sil.