Modiolus bipartus from Segenthal, Germany

This shell is Modiolus bipartus and came from a quarry near Segenthal, Germany where the rocks are middle Jurassic (Bajocian stage) in age.

Right valve

Left valve

Hinge

Profile

Posterior

Anterior

My ID is based on the book "Sengenthal - Ein Eldorado für Fossiliensammler - Die Muscheln des Bajocium von Sengenthal" by Matthias Weissmueller from whom I also purchased this specimen via his E-bay store.