Epitornoceras Frech, 1902

Korn, Dieter & Bockwinkel, Jürgen, 2022, The tornoceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea), European Journal of Taxonomy 806, pp. 32-51 : 40

publication ID	https://doi.org/ 10.5852/ejt.2022.806.1699
publication LSID	lsid:zoobank.org:pub:A2B2A310-8C8C-41B0-B934-1666129B7D90
DOI	https://doi.org/10.5281/zenodo.6373941
persistent identifier	https://treatment.plazi.org/id/03DD7E29-FFA2-2070-FDBB-FC1D193BF992
treatment provided by	Felipe
scientific name	Epitornoceras Frech, 1902
status

Treatment

Genus Epitornoceras Frech, 1902 View in CoL

Type species

Tornoceras (Tornoceras) mithracoides Frech, 1888 View in CoL ; by original designation.

Diagnosis

Genus of the subfamily Tornoceratinae with compressed conch, umbilicus closed in the pre-adult stage but slightly opened in the juvenile stage. Usually without ventrolateral grooves. Ornament with biconvex growth lines, without ribs. Sutural formula E A L I; adventive lobe broadly rounded, asymmetric with steep dorsal flank; ventrolateral saddle narrow, subacute.

Included species

Tornoceras (Tornoceras) mithracoides Frech, 1888 View in CoL , Rhenish Mountains; Goniatites peracutus Hall, 1876 , New York; Epitornoceras transmediterraneum sp. nov., Anti-Atlas.

Remarks

Epitornoceras differs from the other genera of the subfamily by the very narrow ventrolateral saddle of the suture line.