Table 10 in Late Viséan (Mississippian) ammonoids (Cephalopoda) from the Central Moroccan Meseta

Table 10. Conch ontogeny of Hibernicoceras hibernicus Moore & Hodson, 1958 from Sidi Amar (Moroccan Meseta). dmconch shapewhorl cross section shapewhorl expansion2 mmthinly pachyconic; evolute (ww/dm ~ 0.70; uw/dm ~ 0.48)very strongly depressed; moderately embracing (ww/wh ~ 2.60; IZR ~ 0.28)low (WER ~ 1.55)8 mmthickly pachyconic; subinvolute (ww/dm ~ 0.80; uw/dm = 0.28)strongly depressed; extremely embracing (ww/wh ~ 2.10; IZR ~ 0.50)low (WER ~ 1.55)15 mmthickly pachyconic; subinvolute (ww/dm ~ 0.80; uw/dm = 0.25)strongly depressed; extremely embracing (ww/wh ~ 2.05; IZR ~ 0.55)very low (WER ~ 1.45)30 mmthinly pachyconic; subinvolute (ww/dm ~ 0.70; uw/dm ~ 0.18)moderately depressed; extremely embracing (ww/wh ~ 1.65; IZR ~ 0.55)very low (WER ~ 1.55)