Quadrapesus Cheng, 1986

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 : 457

Quadrapesus Cheng, 1986

Quadrapesus Cheng, 1986: 121 .

TYPE SPECIES. — Quadrapesus dumitricai Cheng, 1986 ( Cheng 1986: 121, pl. 2, fig. 11, 15, 23).

AGE AND LOCATION OF TYPE MATERIAL. — Upper Famennian (Upper Devonian), Woodford Formation, Ouachita Mountains, Oklahoma, USA.

TAXON CODE. — 162.

STATUS. — Valid.

DIAGNOSIS. — “Test as with family but lacking an apical horn. Cephalis small, spherical with a basal aperture, encased within a large, spherical, cortical shell-like thorax; possessing a thin wall with delicate, irregular polygonal pore frames and connected by seven triradiate (axial section) primary radial beams to thorax. Thorax spherical with a large, circular basal aperture (pylome) with narrow, slightly elevated pylome rim. Single layer of latticed meshwork with irregular polygonal pore frames. Seven triradiate spines distributed on thorax surface: three on the upper hemisphere; four divergent and slightly curved feet evenly distributed surrounding the pylome margin. No cephalic skeletal elements observed.” ( Cheng 1986: 121).

Family TETRENTACTINIIDAE Kozur & Mostler, 1979 Tribe TETRENTACTINIINI