Nazaromistonella Furutani, 1990

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 : 425

Nazaromistonella Furutani, 1990

Nazaromistonella Furutani, 1990: 52 .

TYPE SPECIES. — Nazaromistonella speciosus Furutani, 1990 ( Furutani 1990: 53, pl. 12, figs 5-7).

AGE AND LOCATION OF TYPE MATERIAL. — mid Paleozoic Fusalfanus osobudaniensis assemblage, Osubudani Valley, Fukuji area, Honshu Japan.

TAXON CODE. — 020.

STATUS. — Junior synonym of Helenifore Nazarov & Ormiston, 1983 (by Aitchison et al. 1996: 59).

DIAGNOSIS. — “Bilaterally symmetrical skeleton consists of a-rod, b-rod, intersector, caveal ribs or vanes, and a branch arising from b.v. A somewhat ellipsoidal ring is made by the following five parts; a.t., b.t., proximal part of b.v., a branch arising from b.v., and proximal part of a.p. Intersector is nearly straight and penetrates the ring. i.d., i.v., a.a., distal part of b.v., and distal part of a.p. project from the ring. B.d. is absent. Caveal ribs or vanes arise mainly from a.t. but also from the base of a.p. Caveal ribs or vanes elongate parallel to the ring.” ( Furutani 1990: 52).

REMARKS

Furutani’s description of Nazaromistonella overlaps with the diagnosis for Helenifore . Noble & Lenz (2007) standardized the terminology between Helenifore and Nazaromistonella , revealing the shared skeletal framework.The species Nazaromistonella speciosus Furutani, 1990 was revised as Helenifore speciosus inAitchison et al. (1996: 59).They also regarded Helenifore speciosus as a senior synonym of Helenifore fasciola Nazarov & Ormiston, 1993 – as Nazaromistonella was a monospecific genus, synonymizing of the type species with Helenifore synonymizes the genus by default. This is followed by Dumitrica in De Wever et al. (2001).