Table 61 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Table 61. Conch ontogeny of Nicimitoceras heterolobatum (Vöhringer, 1960) from Oberrödinghausen, widely umbilicate morphogroup.
dmconch shapewhorl cross section shapewhorl expansion2 mmthickly discoidal; evolute (ww/dm ~0.50; uw/dm ~0.50)moderately depressed; moderately embracing (ww/wh ~1.85; IZR ~0.25)low (WER ~1.55)5 mmthinly discoidal; subevolute (ww/dm ~0.45; uw/dm ~0.40)weakly depressed; strongly embracing (ww/wh ~1.25; IZR ~0.40)low (WER ~1.60)15 mmthinly discoidal; involute (ww/dm ~0.45; uw/dm ~0.03)weakly compressed; very strongly embracing (ww/wh ~0.80; IZR ~0.50)moderate (WER ~1.95)30 mmthinly discoidal; involute (ww/dm ~0.40; uw/dm ~0.02)weakly compressed; very strongly embracing (ww/wh ~0.75; IZR ~0.50)moderate (WER ~1.95)