Orthocyclus Kusina, 2000

Korn, Dieter, Bockwinkel, Jürgen, Ebbighausen, Volker & Klug, Christian, 2003, Palaeobiogeographic and evolutionary meaning of an early Late Tournaisian ammonoid fauna from the Tafilalt of Morocco, Acta Palaeontologica Polonica 48 (1), pp. 71-92 : 86

publication ID	https://doi.org/ 10.5281/zenodo.13272527
persistent identifier	https://treatment.plazi.org/id/03BE87DE-5A7F-FFC8-FCF8-FC7373C8FAA9
treatment provided by	Felipe
scientific name	Orthocyclus Kusina, 2000
status

Treatment

Type species: Ammonellipsites ? raricostatus Kusina, 1980.

Orthocyclus (?) sp.

Fig. 23G.

Material.—One small specimen ( MB.C.3967) of 5 mm diameter is available for study. It is a strongly pachyconic conch (ww/dm 0.83) with a narrow umbilicus (uw/dm 0.22). It is strongly ornamented with 30 sharp ribs, which are linear across flanks and venter. Some of them are intercalated near the umbilicus. The suture shows a subparallel external lobe with concave flanks and a barely visible median saddle.