Supplementary Figure 3

Specimens of Group I (“Anetoceras”) and Group II (“Erbenoceras”) arranged according to umbilical width index UWI (A-R) and according to rib per demi-whorl counts (S-AJ) at 70 mm diameter. Note that some of the specimens were mirrored to enhance comparability. All specimens were coated with NH4Cl. All parts exceeding 70 were cut off in the image processing software. Group I has a grey background and Group II has a white background. A, PIMUZ-29653. B, PIMUZ-29656. C, PIMUZ-29637. D, PIMUZ-29652. E, PIMUZ-29643. F, PIMUZ-28430. G, PIMUZ-29636. H, PIMUZ-29792. I, PIMUZ-29789 J, PIMUZ-29783. K, PIMUZ-29806. L, PIMUZ-29797. M, PIMUZ-29779. N, GPIT-1849-2002. O, PIMUZ-29810. P, PIMUZ-29802. Q, PIMUZ-29805. R, PIMUZ-29815. S, PIMUZ-29637. T, PIMUZ-29656. U, PIMUZ-29653. V, PIMUZ-29643. W, PIMUZ-29652. X, PIMUZ-29806. Y, GPIT-1849-2002. Z, PIMUZ-29810. AA, PIMUZ-29797. AB, PIMUZ-29636. AC, PIMUZ-28430. AD, PIMUZ-29779. AE, PIMUZ-29792. AF, PIMUZ-29802. AG, PIMUZ-29789 AH, PIMUZ-29783. AI, PIMUZ-29805. AJ, PIMUZ-29815.