Arcoclathrata Afanasieva & Amon, 2016

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 : 449-450

Arcoclathrata Afanasieva & Amon, 2016

Arcoclathrata Afanasieva & Amon, 2016: 217 .

TYPE SPECIES. — Arcoclathrata alekseevi Afanasieva & Amon, 2016 ( Afanasieva & Amon 2016: 219, pl. 2, fig. 6-15).

AGE AND LOCATION OF TYPE MATERIAL. — Lower Permian, Cis- Urals, Russia.

TAXON CODE. — 131.

STATUS. — Valid.

DIAGNOSIS. — “Skeleton spherical, with two shells: latticed external and porous internal. Latticed shell formed of interlacing round or laminate rods (resembling woven basket), space between which usually free, but sometimes closed by additional poorly preserved thin skeletal tissue. Internal skeleton represented by potential six-ray spicule, rays of which continued by massive three-bladed main spines with Y-shaped base section. Number of main spines unstable, ranging from 1 to 6. Internal rod-shaped spines frequently diverging from nodes of interpore bars of internal sphere and continued by external by-spines.” ( Afanasieva & Amon 2016: 211).