Table 11 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Table 11. Conch ontogeny of Paragattendorfia patens (Vöhringer, 1960) from Oberrödinghausen.
dmconch shapewhorl cross section shapewhorl expansion8 mmthinly globular; subinvolutestrongly depressed; very strongly embracinglow(ww/dm ~0.90; uw/dm ~0.25)(ww/wh ~2.15; IZR ~0.50)(WER ~1.50)20 mmthickly pachyconic; subinvolutemoderately depressed; very strongly embracingvery low(ww/dm ~0.75; uw/dm ~0.30)(ww/wh ~1.90; IZR ~0.55)(WER ~1.45)