Staurentactinia Schwartzapfel & Holdsworth, 1996

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 : 463

Staurentactinia Schwartzapfel & Holdsworth, 1996

Staurentactinia Schwartzapfel & Holdsworth, 1996: 202 .

TYPE SPECIES. — Staurentactinia nazarovi Schwartzapfel & Holdsworth, 1996 ( Schwartzapfel & Holdsworth 1996: 202, pl. 9, fig. 1-2, 5-19).

AGE AND LOCATION OF TYPE MATERIAL. — Upper Famennian (Upper Devonian), Woodford Formation, Criner Hills and Arbuckle Mountains, Oklahoma, USA.

TAXON CODE. — 186.

STATUS. — Valid.

DIAGNOSIS. — “Test composed of four arms tetrahedrally aligned, extending radially outwards from corners of a central sphere.Test differentiated into an external (cortical) shell and an internal system of four entactiniid spicule rays. External (cortical) shell having a spongy meshwork,variable in density;consisting of thin, irregularly interwoven, solid bars and variably sized/shaped pores. Four solid internal spicular rays connected together at a single point within central interior of central sphere. Spicular rays extend through interior of central sphere and central portion of arms; appearing to be continuous with terminal spines at arm tips. Arms subcylindrical to cylindrical, circular in axial section.” ( Schwartzapfel & Holdsworth 1996: 202).