Class: Nodosariata    Subclass: Nodosariana    Order: Nodosariida    Family: Nodosariidae
Tristix Macfadyen, 1941

Tristix carinata
(Sidebottom, 1918)
identified by scientist   
Quaternary
Banda, Timor and Arafura Sea

Tristix irregularis
(Oberhauser, 1960)
type specimen   holotype
Triassic
Vienna Basin

Tristix triangularis
Barnard, 1953
identified by M. Hesemann   
Jurassic
North European Plain