Gatunek typowy
Goniatites acutolateralis Sandberger et Sandberger, 1851 from the late Famennian of Franconia.

Opis

Diagnosis. — Suture with a single set of pointed flank lobes and shallow and wide ventrolateral lobe.

Remarks. — Complication of septal geometry proceeding from near the venter differs this lineage from the posttornoceratids and makes it similar rather to the sporadoceratids. However, the prominent ventrolateral auricles make Maeneceras unsimilar to the cheiloceratid clade and suggest that it is rather a homeomorph of Felisporadoceras. To prove this a connecting link with either of the lineages has to be looked for. Acutely discoidal Araneites falcatus Bogoslovsky, 1971 is probably the end member of this lineage.

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.