Table 37 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Table 37. Conch ontogeny of Stockumites antecedens (Vöhringer, 1960) from Oberrödinghausen, bed 5.
dmconch shapewhorl cross section shapewhorl expansion2 mmdiscoidal; evolute (ww/dm ~0.45; uw/dm ~0.50)moderately depressed; moderately embracing (ww/wh ~1.70; IZR ~0.20)low (WER ~1.60)4 mmthinly discoidal; evolute (ww/dm ~0.35; uw/dm ~0.60)weakly depressed; moderately embracing (ww/wh ~1.40; IZR ~0.20)low (WER ~1.70)12 mmthickly discoidal; subinvolute (ww/dm ~0.50; uw/dm ~0.20)weakly compressed; strongly embracing (ww/wh ~0.95; IZR ~0.40)moderate (WER ~1.95)20 mmthickly discoidal; involute (ww/dm ~0.50; uw/dm ~0.10)weakly compressed; very strongly embracing (ww/wh ~0.90; IZR ~0.50)moderate (WER ~1.95)