Palaeoscenidium Deflandre, 1953 sensu Furutani, 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 : 454

Palaeoscenidium Deflandre, 1953 sensu Furutani, 1983

Palaeoscenidium Deflandre, 1953: 408 . — Furutani 1983: 107.

Goodbodium Furutani, 1990: 43 .

TYPE SPECIES. — Palaeoscenidium cladophorum Deflandre, 1953 ( Deflandre 1953: 408, fig. 308).

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

TAXON CODE. — 151.

STATUS. — Valid.

DIAGNOSIS. — “En forme de tente à 4 arêtes prolongées par de solides cornes épineuses, tient des Plectoidae par son squelette important, mais l’existence d’une coque bien individualisée en ferait un Cyrtoidea (Monocyrtida) si cette coque était treillissée ou perforée mais non mince, membraneuse, comme elle l’est en réalité.” ( Deflandre 1953: 408).

DIAGNOSIS (English translation by Taniel Danelian). — “In the form of a tent with four ridges extending to robust thorny horns, has affinities with the Plectoidae by its extensive skeleton, but the existence of a distinct shell suggests a Cyrtoidea (Monocyrtida) if this shell was latticed or perforated, but not thin, membranous, as it really is.”

REMARKS

There have been several proposed emendations to Deflandre’s brief description of this genus ( Furutani 1983; Goodbody 1986; MacDonald 2004). Furutani (1983: 106, 107), in his revisions to the family Palaeoscenidiidae Riedel, 1967 , notes that most of the palaeoscenids from his material have four basal spines, and in his proposed diagnosis of Palaeoscenidium , the shell is tent-like, and the basal spines are straight and do not form rings. The number of apical spines is 1-4, as with the Palaeoscenidiinae Riedel, 1967. In following Furutani’s emendations, this genus would encompass Goodbodium Furutani, 1990 (see remarks under Goodbodium ), but excludes many of the other Paleozoic genera that differ in the number of basal rays and in possessing bifurcations of these rays.