Fig. 5
From: Interpreting drag consequences of ammonoid shells by comparing studies in Westermann Morphospace
Jacobs’ (1992) hydrodynamic results for six ammonoid shell specimens are shown in Westermann Morphospace. a The slope for the line fitted to coefficient of drag and Re (Fig. 4) are contoured onto Westermann Morphospace. b Contours for coefficient of drag at Re 2500. Note the shift to higher drag measures as shells plot farther from the spherocone corner. c Contours for coefficient of drag at Re 15000. Note the shift to lower coefficients of drag as shells plot closer to the oxycone corner