The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)
Author
Korn, Dieter
286CA4F3-7EBC-4AEF-A66A-B2508D001367
Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstrasse 43, 10115 Berlin, Germany.
dieter.korn@mfn.berlin
Author
Weyer, Dieter
A09A1738-C70E-4F22-A069-8B7DB4A1753D
Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstrasse 43, 10115 Berlin, Germany.
dieter.weyer@t-online.de
text
European Journal of Taxonomy
2023
2023-07-19
882
1
230
http://dx.doi.org/10.5852/ejt.2023.882.2177
journal article
58033
10.5852/ejt.2023.882.2177
57d1d191-2bf5-4229-a0f5-9ab472a114a6
2118-9773
8177581
67C909E4-C700-4F8D-B8CE-5FD9B2C5D549
Genus
Costimitoceras
Vöhringer, 1960
Type
species
Costimitoceras ornatum
Vöhringer, 1960: 148
; original designation.
Genus diagnosis
Genus of the
Acutimitoceratinae
with a discoidal conch and moderately high to high coiling rate (WER = 1.90–2.20); inner whorls evolute. Ornament with biconvex growth lines and spiral lines. Suture line with deep external lobe.
Genus composition
Central Europe (
Vöhringer 1960
):
Costimitoceras ornatum
Vöhringer, 1960
.
North Africa(
Ebbighausen & Bockwinkel 2007
):
Costimitoceras aitouamar
Ebbighausen& Bockwinkel, 2007
.
South
China
(
Ruan 1981
):
Imitoceras
(
Costimitoceras
)
epichare
Ruan, 1981
.
Remarks
Costimitoceras
can be easily distinguished from all other prionoceratids due to the very striking combination of coarse growth lines and spiral lines.