Protoperidinium subgenus Archaeperidinium section Stelladinium Appendix B
From dinoflaj2
"PROTOPERIDINIUM subgenus ARCHAEPERIDINIUM section STELLADINIUM" (Bradford, 1975, p.3065-3066) Harland, 1982, p.395. Combination not validly published: basionym not fully referenced. NOW Stelladinium. Originally (and now) Stelladinium, subsequently Protoperidinium subgenus Archaeperidinium section Stelladinium (combination not validly published). Type: Bradford, 1975, fig.2, as Stelladinium reidii.