Name: Cleoniceras tenuicostulatum (12.5 cm) & Cymatoceras sakalavum (5.5 cm)
Age: Cretaceous, albian
Provenance: Mahajanga, Madagascar

Ammonite measures 12.5 cm and the nautilus 5.5 cm. The block weighs 2.2 kg. Fossils are not polished. The association is natural.