Palaeoactinosphaera Noble, 1994

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 : 488

Palaeoactinosphaera Noble, 1994

Palaeoactinosphaera Noble, 1994: 33 .

TYPE SPECIES. — Palaeoactinosphaera antica Noble, 1994 ( Noble 1994: 34, pl. 4, fig. 15-17).

AGE AND LOCATION OF TYPE MATERIAL. — Silurian, zones 1 though 5 of Noble (1994), East Bourland Mountain, Marathon uplift, west Texas, USA.

TAXON CODE. — 300.

STATUS. — Valid.

DIAGNOSIS. — “Spherical to subspherical latticed cortical shell with six to eight primary spines and no secondary spines. Primary spines may be rod-shaped, grooved, or bladed, and can be arranged either perpendicular (orthogonally) or non-perpendicular (eccentrically) to each other. Primary bars extend inward and connect the cortical shell to the medullary shell. Primary bars are rod-shaped or three-bladed. Pore frames on cortical shell are polygonal to subcircular in outline and vary in their degree of regularity. Short nodes always occur at the juncture of pore frames, but are sometimes not well-preserved. Medullary shell may be either spherical or subspherical.” ( Noble 1994: 33).