Ouaka 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 : 463

Ouaka Cheng, 1986

Ouaka Cheng, 1986: 176 .

TYPE SPECIES. — Ouaka asymmetrica Cheng, 1986 ( Cheng 1986: 176, pl. 2, fig. 1, 2, 11, 13, 18).

AGE AND LOCATION OF TYPE MATERIAL. — Lower Carboniferous, Oklahoma and Arkansas, USA.

TAXON CODE. — 185.

STATUS. — Junior synonym of Latentifistula Nazarov & Ormiston, 1983b (by Maldonado & Noble 2010).

DIAGNOSIS. — “Test as with family, but composed of three symmetrically to slightly asymmetrically arranged rays occurring in a single plane. Cortical shell of central area and rays composed of labyrinthine meshwork with thin, hollow, intricately interlacing bars forming irregularly shaped pores. Rays discoid in cross section. Medullary shell composed of a centrally placed latticed shell and three longitudinal, hollow, radial beams. Longitudinal radial beams asymmetrically surround the central medullary shell along three edges and radially extend through the interior of the rays. Radial beams appear to be continuous with ray spines. Latticed medullary shell and radial beams connected by secondary radial beams to the cortical shell.” ( Cheng 1986: 176).

REMARKS

Many elements of the above diagnosis are common to that of the original description of Latentifistula , including “hollow radial beams”, which may be construed as the hollow rays described in Latentifistula by Nazarov & Ormiston (1983b). We do not recognize the “labyrinthine” structure sensu Cheng (1986) as a distinction from other stauraxon genera (see remarks under the family Latentifistulidae )