Fig. 3

Gladius morphology of Simoniteuthis michaelyi n. gen. n. sp., holotype (MNHNL TI024), Lower Toarcian, Serpentinum Chronozone, Exaratum Subchronozone, Bascharage. A overview of the slab; B close-up of the anterior hyperbolar zone showing the course of growth increments; C schematic morphology and measurements; D overview of the counter-slab; E close-up of the posterior gladius showing the course of growth increments. Scale bars = 10 mm