Table 43 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Table 43. Conch ontogeny of Stockumites similis (Vöhringer, 1960) from Oberrödinghausen.
dmconch shapewhorl cross section shapewhorl expansion2 mmthickly pachyconic; subevolute (ww/dm ~0.75; uw/dm ~0.35)strongly depressed; strongly embracing (ww/wh ~2.05; IZR ~0.35)low (WER ~1.70)5 mmthickly pachyconic; involute (ww/dm ~0.75; uw/dm ~0.10)weakly depressed; very strongly embracing (ww/wh ~1.40; IZR ~0.50)moderate (WER ~1.85)15 mmthinly pachyconic; involute (ww/dm ~0.65; uw/dm ~0.00)weakly depressed; very strongly embracing (ww/wh ~1.10; IZR ~0.50)moderate (WER ~1.95)30 mmthickly discoidal; involute (ww/dm ~0.55; uw/dm ~0.00)weakly depressed; very strongly embracing (ww/wh ~1.00; IZR ~0.50)moderate (WER ~1.95)