Triplanospongos Sashida & Tonishi, 1988

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 : 461

Triplanospongos Sashida & Tonishi, 1988

Triplanospongos Sashida & Tonishi, 1988: 536 .

Trifidospongus Noble & Renne, 1990: 388 .

TYPE SPECIES. — Triplanospongos musashiensis Sashida & Tonishi, 1988 ( Sashida & Tonishi 1988: 536, fig. 6, 9.7-9.12 [monotypy]).

AGE AND LOCATION OF TYPE MATERIAL. — Upper Permian, Itsukaichi, Tokyo Prefecture, Japan.

TAXON CODE. — 180.

STATUS. — Valid.

DIAGNOSIS. — “Shell comprising three double-ridged arms with triangular spongy fabrics and conical terminal spines. Arms radiating from the center of shell at an angle of 120°. Small triradiate plate present at the center of shell. One or two narrow ridges, I-shaped in cross section, being arranged parallel to arm at nearly mid-part of spongy shell. This ridge coming in contact with arm at distal end of shell or amalgamated [sic, probably amalgamate] with surrounding spongy fabrics.” ( Sashida & Tonishi 1988: 536).