Query Genus Locality Fossil Stomatorbina concentrica Main Key to Species About Contact
Class: Fusulinata    Subclass: Fusulinana    Order: Endothyrida    Family: Tetrataxidae
Tetrataxis Ehrenberg, 1854

Tetrataxis concava
Galloway and Ryniker, 1930
type specimen   holotype
Carboniferous
American South

Tetrataxis nanus
Kristan-Tollmann, 1964
type specimen   holotype
Triassic
central Northern Alps