Fig. 8
From: Cephalopod body size and macroecology through deep time
Correlations between parameters that were used to determine volumes. a, nautilid volume versus diameter (Suppl. Material 3, 4). b, ammonoid volume versus diameter (Suppl. Material 5, 6). c, ammonoid body mass versus whorl width-diameter ratio; note that forms with oxyconic conchs fall below the curve and those with thick conchs above (Suppl. Material 5, 6). d, neocoleoid volume versus mantle length (Suppl. Material 7, 8); there are stout and slender species, explaining values above and below the trendline.
