Haplodiacanthus Nazarov & Rudenko, 1981

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 : 428-429

Haplodiacanthus Nazarov & Rudenko, 1981

Haplodiacanthus Nazarov & Rudenko, 1981: 133 .

TYPE SPECIES. — Haplodiacanthus anfractus Nazarov & Rudenko, 1981 ( Nazarov & Rudenko 1981: 133, pl. 1, fig. 5-7).

AGE AND LOCATION OF TYPE MATERIAL. — Upper Carboniferous to Lower Permian, Southern Urals, Russia.

TAXON CODE. — 033.

STATUS. — Junior synonym of Parafollicucullus (by Ishiga et al. 1982b: 274).

DIAGNOSIS. — “Раковина конусовидная, сегментированная, неперфорированная, nластинчатая, с двумя иглами в апикальной чacти. Внутренний скелет представлен соединяющимися в верхней чacти колумеллами,nротягивающимися параллельно стенки раковины. Характерна гетерогенность сегментации различных частей раковины – небольшие сегменты развиты в апикальной чacти, более крупные – в дистальной. Базальный сегмент имеет изогнутые отростки.” ( Nazarov & Rudenko 1981: 133).

DIAGNOSIS (English translation by A. Kolesnikov). — “Shell is conical, segmented, imperforate, lamellar, with two horns in apical part. The internal skeleton is represented by columellae, which are jointed in the upper part and elongated parallel to the shell wall. There is characteristic heterogeneity of segmentation of different parts of shell: small segments are developed in the apical part; bigger ones are developed in the distal part. The basal segment has a curved appendix.”

REMARKS

This genus was synonymized with Pseudoalbaillella by Ishiga et al. (1982b: 274). Parafollicucullus is considered the senior synonym to Pseudoalbaillella and by extension to Haplodiacanthus .