†Helvetocapsa plicata semiplicata Matsuoka 1991
Polycystinea - Nassellaria - Williriedellidae
Alternative combinations: Stichocapsa plicata semiplicata, Stichocapsa semiplicata
Full reference: A. Matsuoka. 1991. Early Jurassic Radiolarians from the Nanjo Massif in the Mino Terrane, central Japan. Part 1. Tricolocapsa, Stichocapsa, and Minocapsa, n. gen. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 161:720-738
Belongs to Helvetocapsa plicata according to S. Gorican et al. 2006
See also Matsuoka 1991 and Yao 1997
Sister taxon: Stichocapsa plicata plicata
Type specimen: NU MR 0019
Distribution: found only at NJ-12, Mino Terrane (Jurassic of Japan)