Table 8 in The ammonoids from the Gattendorfia Limestone of Gattendorf (Devonian-Carboniferous boundary; Upper Franconia, Germany)

Table 8. Conch ontogeny of Stockumites parallelus Korn & Weyer, 2023 from Gattendorf. dmconch shapewhorl cross section shapewhorl expansion5 mmthickly discoidal; subinvoluteweakly depressed; moderately embracinglow(ww/dm ~ 0.54; uw/dm ~ 0.28)(ww/wh ~ 1.25; IZR ~ 0.30)(WER ~ 1.65)15 mmthickly discoidal; involuteweakly depressed; very strongly embracingmoderate(ww/dm ~ 0.55; uw/dm ~ 0.10)(ww/wh ~ 1.05; IZR ~ 0.50)(WER ~ 1.95)30 mmthickly discoidal; involuteweakly compressed; very strongly embracingModerate to high(ww/dm ~ 0.45; uw/dm ~ 0.00)(ww/wh ~ 0.70; IZR ~ 0.50)(WER = 1.90–2.00)2 mmthickly discoidal; subevolute (ww/dm ~ 0.58; uw/dm ~ 0.35)moderately depressed; strongly embracing (ww/wh ~ 1.60; IZR ~ 0.40)low (WER ~ 1.65)5 mmthickly discoidal; subinvolute (ww/dm ~ 0.58; uw/dm ~ 0.20)weakly depressed; very strongly embracing (ww/wh ~ 1.25; IZR ~ 0.50)moderate (WER ~ 1.80)15 mmthickly discoidal; involute (ww/dm ~ 0.50; uw/dm ~ 0.02)weakly compressed; very strongly embracing (ww/wh ~ 0.90; IZR ~ 0.50)high (WER ~ 2.05)30 mmthinly discoidal; involute (ww/dm ~ 0.40; uw/dm ~ 0.00)weakly compressed; very strongly embracing (ww/wh ~ 0.70; IZR ~ 0.50)high (WER ~ 2.00)表8 产自加滕多夫（Gattendorf）的平行斯托克姆菊石（Stockumites parallelus Korn & Weyer, 2023）壳体个体发育特征。 壳径5 mm：壳体为厚盘形，呈半内卷状态；螺环横截面弱凹陷，螺环适度包裹；螺环扩张等级为低；螺环宽度/壳径（ww/dm）≈0.54、脐部宽度/壳径（uw/dm）≈0.28；螺环宽度/螺环高度（ww/wh）≈1.25、内旋包裹率（IZR）≈0.30；螺环扩张率（WER）≈1.65 壳径15 mm：壳体为厚盘形，呈全内卷状态；螺环横截面弱凹陷，螺环极强包裹；螺环扩张等级为中等；螺环宽度/壳径（ww/dm）≈0.55、脐部宽度/壳径（uw/dm）≈0.10；螺环宽度/螺环高度（ww/wh）≈1.05、内旋包裹率（IZR）≈0.50；螺环扩张率（WER）≈1.95 壳径30 mm：壳体为厚盘形，呈全内卷状态；螺环横截面弱压缩，螺环极强包裹；螺环扩张等级为中至高；螺环宽度/壳径（ww/dm）≈0.45、脐部宽度/壳径（uw/dm）≈0.00；螺环宽度/螺环高度（ww/wh）≈0.70、内旋包裹率（IZR）≈0.50；螺环扩张率（WER）为1.90–2.00 壳径2 mm：壳体为厚盘形，呈半外卷状态；螺环横截面中度凹陷，螺环强烈包裹；螺环扩张等级为低；螺环宽度/壳径（ww/dm）≈0.58、脐部宽度/壳径（uw/dm）≈0.35；螺环宽度/螺环高度（ww/wh）≈1.60、内旋包裹率（IZR）≈0.40；螺环扩张率（WER）≈1.65 壳径5 mm：壳体为厚盘形，呈半内卷状态；螺环横截面弱凹陷，螺环极强包裹；螺环扩张等级为中等；螺环宽度/壳径（ww/dm）≈0.58、脐部宽度/壳径（uw/dm）≈0.20；螺环宽度/螺环高度（ww/wh）≈1.25、内旋包裹率（IZR）≈0.50；螺环扩张率（WER）≈1.80 壳径15 mm：壳体为厚盘形，呈全内卷状态；螺环横截面弱压缩，螺环极强包裹；螺环扩张等级为高；螺环宽度/壳径（ww/dm）≈0.50、脐部宽度/壳径（uw/dm）≈0.02；螺环宽度/螺环高度（ww/wh）≈0.90、内旋包裹率（IZR）≈0.50；螺环扩张率（WER）≈2.05 壳径30 mm：壳体为薄盘形，呈全内卷状态；螺环横截面弱压缩，螺环极强包裹；螺环扩张等级为高；螺环宽度/壳径（ww/dm）≈0.40、脐部宽度/壳径（uw/dm）≈0.00；螺环宽度/螺环高度（ww/wh）≈0.70、内旋包裹率（IZR）≈0.50；螺环扩张率（WER）≈2.00