Secuicollacta Nazarov & Ormiston, 1984 sensu MacDonald (1998)

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 : 437-438

Secuicollacta Nazarov & Ormiston, 1984 sensu MacDonald (1998)

Secuicollacta Nazarov & Ormiston, 1984: 75 . — MacDonald 1998: 587.

Palaeosphaera Renz, 1990: 372 (n. syn.)

Rotasphaera Noble, 1994: 19 .

Parasecuicollacta Won, Blodgett & Nestor, 2002: 953 .

TYPE SPECIES. — Secuicollacta cassa Nazarov & Ormiston, 1984 ( Nazarov & Ormiston 1984: 75, pl. 4, fig. 5).

AGE AND LOCATION OF TYPE MATERIAL. — Silurian, Southern Urals, Russia.

TAXON CODE. — 075.

STATUS. — Valid.

DIAGNOSIS. — “ Haplentactiniidae c эктопическим расположением внутреннего каркаса, который представлен 5-6 и более лучами. Развитие апофизов на лучах и их соединение образуют 1-2 изометричные грубосетчатые оболочки” ( Nazarov & Ormiston 1984: 75).

DIAGNOSIS (English translation). — “Haplentactinidae with an ectopic location of inner spicule which contains 5-6 or more rays. Development of apophyses on rays and their connection form 1-2 coarse-meshed isometric shells”.

REMARKS

MacDonald (1998) emends the broad diagnosis ofNazarov & Ormiston (1984) to exclude two-shelled forms such as species he placed in Diparvapila , restricting Secuicollacta to single shelled species, whose shell is formed “mainly of primary units; spicule ectopically placed, three to six rays with one ray perpendicular to other rays; spicule rays continue directly as spines” ( MacDonald 1998: 587).

Order ENTACTINARIA Kozur & Mostler, 1982 Family ENTACTINIIDAE Riedel, 1967