Table 11 in Late Viséan (Mississippian) ammonoids (Cephalopoda) from the Central Moroccan Meseta

Table 11. Conch ontogeny of Hibernicoceras mediocre Moore & Hodson, 1958 from Sidi Amar (Moroccan Meseta). dmconch shapewhorl cross section shapewhorl expansion2 mmthickly pachyconic; evolute (ww/dm ~ 0.75; uw/dm ~ 0.45)very strongly depressed; widely embracing (ww/wh ~ 2.70; IZR ~ 0.32)low (WER ~ 1.60)8 mmthickly pachyconic; subinvolute (ww/dm ~ 0.80; uw/dm = 0.20)moderately depressed; extremely embracing (ww/wh ~ 1.70; IZR ~ 0.50)low (WER ~ 1.65)20 mmthickly pachyconic; involute (ww/dm ~ 0.75; uw/dm = 0.12)moderately depressed; extremely embracing (ww/wh ~ 1.60; IZR ~ 0.55)low (WER ~ 1.65)