CATALOG OF ORIGINAL DESCRIPTIONS: Nabespecha Cornell and Simpson 1986

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: rads_cat -> N -> Nabespecha
Other pages this level: Nabespecha, Nabolella, Nassella, Neobotrys, Neosemantis, Neowrangellium, Nephrodictyum, Nephrospyris, Nothotripodiscinus, Novodiacanthocapsa

Nabespecha

Citation: Nabespecha Cornell and Simpson 1986
Rank: genus
Described on page(s) : 286

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Current identification:


Original Description
Subradial to bilaterally symmetrical radiolarians whose central disc region is approximately circular in plan view and a compressed cone in side view. Seven to ten long, slender rays, more or less symmetrically arranged, radiate from the central disc.

Etymology: From the Greek nabe = a hub, and specha = a spoke.

Editors' Notes
Stratigraphic range: Leonardian (Artinskian), Late early Permian.

Note the following in the remarks for POLYFISTULA Nazarov and Ormiston in Nazarov and Ormiston, 1993, p. 45 : - In the original diagnosis (Nazarov and Ormiston 1984, p.80), the genus was defined as a latentifistulid with numerous (seven and more) rays in the internal framework with that internal framework being enclosed in a platy, imperforate skeletal fabric of the multiple elongate external arms. Its type species typically has seven to eight arms arrayed in one plane and an additional arm perpendicular to these; all are joined in a central disk that is flat bottomed or weakly concave on the lower surface and forms a low cone on the upper surface. With the description of a new species of Polyfistula, in this paper the generic diagnosis must be modified to include forms that exhibit the structural organization of the type species but have as few as six arms and to recognize that the external skeleton contains fine pores that are radially arranged and may be closed secondarily. In 1986, Cornell and Simpson described a new monotypic genus, Nabespecha with the type species, N. leonardia from the Bone Springs Formation of West Texas. Despite its clear relationship to the genus Polyfistula they made no mention of that genus or comparisons between the two. The internal structure of Nabespecha has not yet been clarified, it seems entirely likely that it is a Polyfistula and has nothing to do at all with the Nassellarians, as speculated by Cornell and Simpson (1986, p.286).

References:

Cornell, W. C. & Simpson, R. D. (1986). Nabespecha leonardia, n. gen., n. sp.: An unusual radiolarian from the Permian of West Texas. Micropaleontology. 32(3): 286-288. gs


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Nabespecha compiled by the radiolaria@mikrotax project team viewed: 21-1-2021

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