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
Table 99. Conch ontogeny of Hasselbachia erronea sp. nov. from Oberrödinghausen.
dmconch shapewhorl cross section shapewhorl expansion
2 mmthinly pachyconic; subevolute (ww/dm ~0.72; uw/dm ~0.35)strongly depressed; strongly embracing (ww/wh ~2.10; IZR ~0.35)low (WER ~1.70)
4 mmthickly pachyconic; subevolute (ww/dm ~0.75; uw/dm ~0.38)strongly depressed; strongly embracing (ww/wh ~2.15; IZR ~0.35)low (WER ~1.65)
12 mmthickly pachyconic; subinvolute (ww/dm ~0.75; uw/dm ~0.20)moderately depressed; very strongly embracing (ww/wh ~1.70; IZR ~0.55)low (WER ~1.65)
16 mmthickly pachyconic; involute (ww/dm ~0.75; uw/dm ~0.10)moderately depressed; very strongly embracing (ww/wh ~1.60; IZR ~0.55)low (WER ~1.60)