Radiolaria - Entactinaria - Saturnalidae

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 Pseudacanthocircus according to H. Kozur and H. Mostler 1990

Sister taxa: Pseudacanthocircus baumgartneri, Pseudacanthocircus laevis, Pseudacanthocircus mediospinosus, Pseudacanthocircus mocki, Pseudacanthocircus pseudosimplex, Pseudacanthocircus sugiyamai, Pseudacanthocircus troegeri, Pseudoacanthocircus troegeri

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

Ecology: passively mobile planktonic omnivore