Marssonella crassa
(Marsson, 1878)
identified by scientist   
Paleogene
Carpathians

Marssonella crassa
(Marsson, 1878)
identified by scientist   
Cretaceous
Carpathians

Marssonella crassa
(Marsson, 1878)
identified by scientist   
Cretaceous
North European Plain

Marssonella oxycona
(Reuss, 1860)
identified by scientist   
Cretaceous
Kurdistan

Marssonella ozawai
Cushman, 1936
identified by scientist   
Cretaceous
North European Plain

Marssonella subtrochus
Bartenstein, 1962
identified by M. Hesemann   
Cretaceous
North European Plain

Marssonella trochus
(d'Orbigny, 1840)
identified by scientist   
Cretaceous
North European Plain

Marssonella turris
(d'Orbigny, 1839)
identified by scientist   
Cretaceous
North European Plain

Marssonella turris
(d'Orbigny, 1839)
identified by scientist   
Cretaceous
North European Plain