FIGURE 6 in The taxonomic status of the genus Hubertoceras Spath: A new light on sexual dimorphism from the Callovian ammonites of Kutch, India

FIGURE 6. Bivariate growth graphs between Hubertoceras omphalodes and macroconchs of all contemporary (middle Callovian) species of different genera i.e., Reineckia anceps, Choffatia cobra, Idiocycloceras perisphinctoides and Indosphinctes sp. Cluster of morphological characters of Hubertoceras are separated from those of other genera. D=Diameter of the shell, U=Umbilical diameter, W=Width of the whorl and H=Height of the whorl. Measurements are taken at different ontogenetic stages of the specimens to accommodate intraspecific range of variability of each species. Photos are not to scale.