Triasininae Loeblich and Tappan, 1986

Rigaud, Sylvain, Martini, Rossana & Rettori, Roberto, 2013, A new genus of Norian involutinid foraminifers: Its morphological, biostratigraphic, and evolutionary significance, Acta Palaeontologica Polonica 58 (2), pp. 391-405 : 393

Subfamily Triasininae Loeblich and Tappan, 1986 , here emended

Emended description.—The test is free, lenticular to globular, possibly biumbilicate. Proloculus followed by an enrolled tubular chamber strengthened by internal structures and lateral laminar extensions (lamellae sensu Piller 1978). Wall calcareous, perforate, aragonitic. Aperture simple, terminal (open end of the tubular chamber).

Genera included.—The subfamily includes the monospecific genus Triasina (type species Triasina hantkeni Majzon, 1954 ) and the here erected genus Aulosina (type species Triasina oberhauseri Koehn−Zaninetti and Brönnimann, 1968 ).

Remarks.—The Triasininae differ from the Aulotortinae by the presence of internal structures in the tubular chamber.

Stratigraphic and geographic range.—Upper Triassic: Norian–Rhaetian of Tethys and upper Carnian?–Rhaetian of Panthalassa.