Tritaxia alpina
(Cushman, 1936)
type specimen   holotype
Paleogene

Tritaxia eggeri
Schreiber, 1980
identified by scientist   
Cretaceous
Kurdistan

Tritaxia eggeri
Schreiber, 1980
identified by scientist   
Cretaceous
Kurdistan

Tritaxia gaultina
(Morozova, 1948)
identified by scientist   
Cretaceous
North European Plain

Tritaxia macfadyeni
Cushman, 1936
identified by scientist   
Cretaceous
North European Plain

Tritaxia midwayensis
(Cushman, 1926)
identified by scientist   
Paleogene
North Africa

Tritaxia orientalis
(Cushman, 1936)
type specimen   holotype
Quaternary

Tritaxia pyramidata
Reuss, 1863
identified by scientist   
Cretaceous
North European Plain

Tritaxia szaboi
(Hantken, 1868)
type specimen   holotype
Paleogene

Tritaxia tricarinata
(Reuss, 1844)
identified by scientist   
Cretaceous
North European Plain

Tritaxia tricarinata
(Reuss, 1844)
identified by scientist   
Cretaceous
North European Plain

Tritaxia tricarinata
(Reuss, 1844)
identified by M. Hesemann   
Cretaceous
North European Plain

Tritaxia whitei
(Cushman and Jarvis, 1936)
identified by scientist   
Cretaceous
Kurdistan

Tritaxia whitei
(Cushman and Jarvis, 1936)
identified by scientist   
Cretaceous
Kurdistan