Zugodactylites

Zugodactylites is an extinct genus of ammonite cephalopod from the lower Toarcian epoch of the Lower Jurassic, ammonite zone Fibulatum.

[1] Whorl section of shells belonging these ammonites were compressed, equidimensional or depressed.

Before aperture of adult shell, there has been collar and constriction.

Ribs were dense and they were bifurcating at sharp ventrolateral tubercules or spines.

Sexual dimorphism is known, and Gabillytes, synonym of Zugodactylites were microconchs.