Table 88 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Table 88. Conch ontogeny of Gattenpleura concava (Vöhringer, 1960) from Oberrödinghausen.
dmconch shapewhorl cross section shapewhorl expansion5 mmthinly pachyconic; subevolutemoderately depressed; moderatelyhigh(ww/dm ~0.62; uw/dm ~0.35)embracing(WER ~2.05)(ww/wh ~1.55; IZR ~0.25)10 mmthickly discoidal; subinvoluteweakly depressed; moderately embracingmoderate(ww/dm ~0.55; uw/dm ~0.28)(ww/wh ~1.30; IZR ~0.35)(WER ~1.85)20 mmthinly discoidal; involuteweakly compressed; very stronglylow(ww/dm ~0.40; uw/dm ~0.10)embracing(WER ~1.70)(ww/wh ~0.95; IZR ~0.45)