Table 65 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Table 65. Conch ontogeny of Voehringerites peracutus (Vöhringer, 1960) from Oberrödinghausen and Hasselbachtal.
dmconch shapewhorl cross section shapewhorl expansion2 mmthinly pachyconic; subevolute (ww/dm ~0.70; uw/dm ~0.35)moderately depressed; strongly embracing (ww/wh ~1.90; IZR ~0.40)low (WER ~1.60)5 mmthickly discoidal; subinvolute (ww/dm ~0.55; uw/dm ~0.20)weakly depressed; very strongly embracing moderate (ww/wh ~1.25; IZR ~0.45) (WER ~1.90)15 mmextremely discoidal; involute (ww/dm ~0.32; uw/dm ~0.05)weakly compressed; very strongly embracing (ww/wh ~0.60; IZR ~0.45)high (WER ~2.10)30 mmextremely discoidal; involute (ww/dm ~0.28; uw/dm ~0.00)strongly compressed; very strongly embracing (ww/wh ~0.45; IZR ~0.45)high (WER ~2.15)

表65 采自上勒丁豪森（Oberrödinghausen）与哈瑟尔巴赫谷（Hasselbachtal）的尖沃林格菊石（Voehringerites peracutus，Vöhringer, 1960）的壳体个体发育。
2 mm：壳体呈薄粗锥形、半外旋（ww/dm ≈ 0.70；uw/dm ≈ 0.35）；螺环横切面为中等凹陷、强烈包旋（ww/wh ≈ 1.90；IZR ≈ 0.40）；螺环扩张率（WER）约为1.60。
5 mm：壳体呈厚盘形、半内旋（ww/dm ≈ 0.55；uw/dm ≈ 0.20）；螺环横切面为弱凹陷、极强包旋（ww/wh ≈ 1.25；IZR ≈ 0.45）；螺环扩张率约为1.90。
15 mm：壳体呈极度盘形、内旋（ww/dm ≈ 0.32；uw/dm ≈ 0.05）；螺环横切面为弱压扁、极强包旋（ww/wh ≈ 0.60；IZR ≈ 0.45）；螺环扩张率约为2.10。
30 mm：壳体呈极度盘形、内旋（ww/dm ≈ 0.28；uw/dm ≈ 0.00）；螺环横切面为强压扁、极强包旋（ww/wh ≈ 0.45；IZR ≈ 0.45）；螺环扩张率约为2.15。