Table 13 in Late Viséan (Mississippian) ammonoids (Cephalopoda) from the Central Moroccan Meseta
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Table 13. Conch ontogeny of gen. indet. sp. from Sidi Amar (Moroccan Meseta). dmconch shapewhorl cross section shapewhorl expansion2 mmthickly pachyconic; subevolute (ww/dm ~ 0.80; uw/dm ~ 0.35)strongly depressed; widely embracing (ww/wh ~ 2.30; IZR ~ 0.35)low (WER ~ 1.70)8 mmthickly pachyconic; subevolute (ww/dm ~ 0.80; uw/dm = 0.35)moderately depressed; very widely embracing (ww/wh ~ 1.90; IZR ~ 0.50)low (WER ~ 1.60)15 mmthickly pachyconic; subinvolute (ww/dm ~ 0.75; uw/dm = 0.15)moderately depressed; very widely embracing (ww/wh ~ 1.55; IZR ~ 0.50)low (WER ~ 1.70)30 mmthinly pachyconic; subinvolute (ww/dm ~ 0.65; uw/dm = 0.15)weakly depressed; very widely embracing (ww/wh ~ 1.30; IZR ~ 0.50)moderately high (WER ~ 1.90)
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2025-04-28



