Quadrilobata Wang, 1995

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 : 468

Quadrilobata Wang, 1995

Quadrilobata Wang, 1995: 144 .

TYPE SPECIES. — Quadrilobata ephippiomorpha Wang, 1995 ( Wang 1995: 144, pl.2, fig.16).

AGE AND LOCATION OF TYPE MATERIAL. — Lower Permian, Gufeng Formation, Hushan area, Nanjing, Jiangsu Province, China.

TAXON CODE. — 205.

STATUS. — Valid.

DIAGNOSIS. — “ Ễ体由 4 个Dzü的射肢组成, 外形似è. 射肢 始端增Dz, 末端变细, 相互以 90. 角由中à区⁂出. 2 个相对的 射肢向下弯曲, @外 2 个相对的射肢向上ä起. Ễ外表面具海 绵状网fl.” ( Wang 1995: 144).

DIAGNOSIS (English translation). — “Skeleton is made of four stout limbs, shaped like a saddle.Beginning of limb thick, thinning towards the end. Limbs at 90° angle to one another.Angle extends from the central area.Two opposed limbs bent downwards, another two opposed limbs directed with an upward tilt. Outer shell surface has a spongy mesh.”

REMARKS

Wang (1995) originally assigned this genus to Ruzhencevispongidae . The radiolarians were extracted from chert and preservational differences make it difficult to compare it with other genera within this order, which are well preserved and extracted from limestone. This genus might be a less wellpreserved version of Brianellium Cheng, 1986 , which shares a similar gross morphology. No spines are observed on the terminae of Quadrilobata but this might be a preservational issue, as spines are also absent from the terminae of Latentifistula in the same material.