Rzehakina epigona
(Rzehhak, 1895)
identified by scientist   
Cretaceous
Barents Sea

Rzehakina epigona
(Rzehak, 1895)
identified by scientist   
Paleogene
off Biscaya and Iberia

Rzehakina fissistomata
(Grzybowski, 1901)
identified by scientist   
Paleogene
Carpathians

Rzehakina lata
Cushman & Jarvis, 1928
identified by scientist   
Cretaceous
Barents Sea

Rzehakina minima
Cushman & Renz, 1946
identified by scientist   
Cretaceous
Barents Sea