CATALOG OF ORIGINAL DESCRIPTIONS: Chiloguembelina woodi Samanta 1973

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: pf_cat -> C -> Chiloguembelina -> Chiloguembelina woodi
Other pages this level: C. adriatica, C. andreae, C. circumlabiata, C. fusiformis, C. midwayensis strombiformis, C. midwayensis subcylindrica, C. minutissima, C. noguerensis, C. orientalis, C. parallela, C. praecursor, C. subtriangularis, C. subwilcoxensis, C. taurica, C. ujliaensis, C. victoriana, C. vineetae, C. waiparaensis, C. woodi,

Chiloguembelina woodi

Citation: Chiloguembelina woodi Samanta 1973
Rank: Species
Type locality: Rakhi Nala section, West Pakistan.
Type sample and level: sample No. 3622,
Type & figured specimens: (PI. 15, figs rs-r6)
Description on pages: 432-433

Linked specimens: London, UK; NHM (PM P 48903)

Current identification/main database link: Streptochilus martini (Pijpers 1933)


Original Description
DIAGNOSIS. A Chiloguembelina with inflated, subglobular chambers between depressed, oblique sutures; surface smooth to weekly hispid; aperture large, semicircular to subcircular, bordered by a narrow lip-like structure.

DESCRIPTION. Test flaring, biserial; periphery lobate. Chambers arranged in 5 to 7 pairs, increasing regularly in size; those in the initial part of the test small and compressed, later becoming inflated, subglobular. Sutures oblique, slightly depressed in the early part becoming strongly depressed later. Surface almost smooth to weakly hispid. Aperture a large, semicircular to subcircular opening bordered by a narrow lip-like structure.

Size: Holotype. Length: 0.28 mm Paratypes. Length: 0.27 mm-0.33 mm

Etymology: This species is named after Professor Alan Wood, Aberystwyth.

Extra details from original publication
REMARKS. The chambers vary in number and in degree of inflation; the last two chambers also vary in size. The aperture varies in shape and size, and is often obscured by a crystalline infilling.

Among the Middle and Upper Eocene representatives of the genus, C. venezuelana (Nuttall) shows some resemblance to C. woodi. However, the latter can be distinguished by its more inflated chambers and larger aperture. With its inflated subglobular chambers and large semi-circular aperture, C. woodi shows a relationship to C. wilcoxensis (Cushman & Ponton), a Palaeocene to Lower Eocene species from which it may have evolved.

The form from the Upper Eocene of the Mikir Hills, Assam, recorded by the writer (1970b) as Chiloguembelina sp., shares with C. woodi the inflated chambers, depressed sutures, and large subcircular aperture.

DISTRIBUTION. In the Rakhi Nala section, C. woodi is restricted to the Truncorotaloides rohri Zone

References:

Samanta, B. K. (1973). Planktonic foraminifera from the Paleocene-Eocene succession in the Rakhi Nala, Sulaiman Range, Pakistan. Bulletin of the British Museum (Natural History) Geology. 22: 421-482. gs :: ::


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Chiloguembelina woodi compiled by the pforams@mikrotax project team viewed: 2-7-2020

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