sensu Cheng (1986)

Noble, Paula, Aitchison, Jonathan C., Danelian, Taniel, Dumitrica, Paulian, Maletz, Jörg, Suzuki, Noritoshi, Cuvelier, Jessie, Caridroit, Martial & O’Dogherty, Luis, 2017, Taxonomy of Paleozoic radiolarian genera, Geodiversitas 39 (3), pp. 419-502 : 472

sensu Cheng (1986)

REMARKS

There is some disagreement, even amongst the authorship of this chapter, about placement of this family. Cheng (1986) and Dumitrica (in De Wever et al. 2001) argue for placement in Nassellaria ,citing similarities in the seven-rayed spicule with the early cyrtoid Nassellaria in the Triassic,and external similarity with some Triassic forms. Riedel (1967) and Holdsworth (1973) maintain their place as pylomate entactinarians, citing a 65 million year gap between the last appearance of the Archocyrtidae and the Triassic Nassellaria . They also cite the instability of the position of the rays, which can flip from apical to basal position in the Archocyrtidae .Ray position is stable in theTriassic nassellarians.