Radiolaria - Spumellaria - Pseudoacanthocircidae

Alternative combination: Stauromesosaturnalis squinaboli

Full reference: H. Kozur and H. Mostler. 1990. Saturnaliacea Deflandre and some other stratigraphically important Radiolaria from the Hettangian of Lenggries/Isar (Bavaria, Northern Calcareous Alps). Geologisch-Paläontologische Mitteilungen Innsbruck 17:179-248

Belongs to Triacanthocircus according to H. Kozur and H. Mostler 1990

Sister taxa: Stauromesosaturnalis deweveri, Stauromesosaturnalis schizospinosus, Triacanthocircus muelleri

Type specimen: Its type locality is Mt. Kirchstein, sample L1, which is in a Hettangian basinal (siliceous) limestone in the Kirchstein Formation of Germany.