Gatunek typowy
Erfoudites zizensis Korn, 1999 from the Platyclymenia annulata Zone in the Tafilalt, Morocco.

Opis

Diagnosis. — Conch aperture transverse or with very weak ventrolateral auricles, with longitudinal (spiral) striation; suture with additional ventral lobes in the middle of ventrolateral saddle.

Remarks. — Korn (2002) introduced the subfamily Xenosporadoceratidae to include longitudinally striated sporadoceratids with transeverse apperture bearing incipient auricles. This implies that the auriculate (biconvex) aperture is of secondary origin. Quite well also the complex suture may be a homeomorphy in respect to the sporadoceratids and these may have been praeglyphioceratids with a discoidal, auriculate tornoceratid conch morphology. 

Synonimy

Zasięg czasowy

Literatura

Dzik, J. 2006. The Famennian "Golden Age" of conodonts and ammonoids in the Polish part of the Variscan sea. Palaeontologia Polonica 63, 1-359.