Class: Monothalamea    Subclass:     Order: Astrorhizida    Family: Rhizamminidae
Rhizammina Brady, 1879

Rhizammina algaeformis
Brady, 1879
identified by scientist   
Quaternary
Patagonia and off

Rhizammina ramulus
Kristan-Tollmann, 1964
type specimen   holotype
Triassic
central Northern Alps