Stephan Hack

Graphoceras (Graphoceras) decorum

Graphoceras (Graphoceras) decorum

Graphoceras (Graphoceras) formosum

Graphoceras (Graphoceras) formosum

Graphoceras (Graphoceras) vscriptum

Graphoceras (Ludwigella) cornu

Graphoceras (Ludwigella) cornu

Graphoceras cavatum

Graphoceras limitatum

Graphoceras sp.

Gravesia cf. hypselostoma

Gravesia gigas

Gravesia gigas

Gravesia gravesiana

Gregoriceras sp.

Große Vielfalt: Kosmoceraten von der Mittleren Alb