Albaillella Deflandre, 1952 sensu Won (1983)

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 : 420-421

Albaillella Deflandre, 1952 sensu Won (1983)

Albaillella Deflandre, 1952: 873 . — Won 1983: 123.

Spinodeflandrella Kozur, 1981: 267.

Imotoella Kozur & Mostler, 1989: 163 .

Saturnalbaillella Kozur & Mostler, 1989: 162 .

TYPE SPECIES. — Albaillella paradoxa Deflandre, 1952 ( Deflandre 1952: 873, figs 1-5).

AGE AND LOCATION OF TYPE MATERIAL. — Visean (Lower Carboniferous), Montagne Noire, France.

TAXON CODE. — 001.

STATUS. — Valid.

ORIGINAL DIAGNOSIS. — “La coque de l’organisme, en cône creux très allongé, est bâtie sur un squelette siliceux plein en forme d’H tronqué. Une branche majeure différenciée de ce squelette, peut atteindre l’apex, en formant une columelle détachée de la paroi de la coque à laquelle elle est reliée par un double système trabéculaire. Cette columelle peut disparaître. La coque, également siliceuse, est brunâtre, mince, finement ponctulée, mais non perforée (à l’échelle du microscope optique). Son ouverture porte des épines obliques, toujours dirigées vers la branche majeure du squelette. Ces épines décèlent la symétrie bilatérale de la coque, qui paraît composée de bandes obliques sensiblement d’égale largeur.”( Deflandre 1952: 873).

DIAGNOSIS (English translation). — “The organism’s shell, a very elongate hollow cone, is built on a filled siliceous skeleton in the form of a truncated H. A major rod, differentiated from this skeleton, may reach the apex to form a columnella detached from the wall of the shell to which it is connected by a double trabecular meshwork. This columnella may disappear. The shell is also siliceous, brownish, thin, finely punctate, but not perforated (as seen in transmitted light microscopy). Its aperture bears oblique spines, always oriented towards the major rod of the skeleton. These spines discern the bilateral symmetry of the shell, which appears to be composed of oblique bands of roughly approximately equal width.”

REMARKS

Deflandre’s diagnosis fits well with the lanceolate type species, A. paradoxa , Won’s emendation ( Won 1983) expands the Deflandre’s diagnosis to include a wider array of shell morphologies, including species that are wider, and bear wings. Won also describes details of the lower part of the H-frame, the stapia, and notes the common occurrence of a line of pores along segments.