CATALOG OF ORIGINAL DESCRIPTIONS: Rectoguembelina hispidula Cushman 1938

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 -> R -> Rectoguembelina -> Rectoguembelina hispidula
Other pages this level: R. cretacea, R. hispidula,

Rectoguembelina hispidula

Citation: Rectoguembelina hispidula Cushman 1938
Rank: Species
Type locality: road cut, N. side of W. Dallas pike, 5.3 mi. NE. of Austin-Eagle Ford contact at Chalk Hill, Texas.
Type sample and level: middle portion of Austin chalk
Holotype Repository: USNM
Type & figured specimens: Pl. 3. 6gB. 20-22; Holotype (Cushman ColI. No. 24401); Desc p. 21

Linked specimens: USNM-24402 USNM-31835 USNM-24401

Current identification/main database link:


Original Description
Test elongate, slightly tapering, biserial for most of the length, latest portion uniserial; chambers inflated, earliest ones biserial, gradually becoming more loosely so, and last-formed ones recti­linear and nearly globular or slightly pyriform; sutures de­pressed; wall finely hispid throughout; aperture rounded, at the end of a short neck which is usually excentrically placed.

Size: Length 0.25-0.30 mm.; diameter 0.08-0.10 mm.

Etymology:

Extra details from original publication
This species differs from R. texana in the much longer, biserial stage and loosely biserial characters in the adult. It occurs at several stations in the lower and middle portions of the Austin chalk. In the loosely biserial character it resembles the figures given of Tubitextularia from the Cretaceous of Bohemia.

References:

Cushman, J. A. (1938). Cretaceous species of Guembelina and related genera. Contributions from the Cushman Laboratory for Foraminiferal Research. 14: 2-28. gs :: ::


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Rectoguembelina hispidula compiled by the pforams@mikrotax project team viewed: 1-6-2020

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