Fig. 18From: Systematics, endemism and phylogeny of Indian proplanulitins (Ammonoidea) from the Bathonian–Callovian of Kutch, western IndiaBivariate plot of degree of whorl inflation (W/H) against degree of involution (U/D) in macroconchs of the three genera, Sivajiceras, Obtusicostites and Kinkeliniceras. Note minor overlapping of the distribution between Sivajiceras and Obtusicostites Back to article page