Table 45 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Table 45. Conch ontogeny of Stockumites depressus (Vöhringer, 1960) from Oberrödinghausen.
dmconch shapewhorl cross section shapewhorl expansion2 mmthickly pachyconic to globular; subinvolute (ww/dm = 0.80–0.90; uw/dm = 0.25–0.30)strongly depressed; strongly embracing (ww/wh ~2.10; IZR = 0.30–0.40)low (WER ~1.70)5 mmglobular; subinvolute (ww/dm = 0.85–0.95; uw/dm = 0.15–0.25)moderately depressed; very strongly embracing (ww/wh ~1.95; IZR = 0.45–0.55)low (WER ~1.70)15 mmpachyconic; involute (ww/dm = 0.70–0.80; uw/dm = 0.05–0.10)weakly depressed; very strongly embracing (ww/wh ~1.45; IZR = 0.50–0.55)moderate (WER ~1.80)30 mmthinly pachyconic; involute (ww/dm ~0.70; uw/dm ~0.05)weakly depressed; very strongly embracing (ww/wh ~1.35; IZR = 0.50–0.55)moderate (WER ~1.90)