Catalog - Favusella pessagnoi Catalog - Favusella pessagnoi

CATALOG OF ORIGINAL DESCRIPTIONS: Favusella pessagnoi Michael 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 -> F -> Favusella -> Favusella pessagnoi
Other pages this level: F. confusa, F. hedbergellaeformis, F. nitida, F. orbiculata, F. papagayosensis, F. pessagnoi, F. planata, F. quadrata, F. scitula, F. stiftia, F. voloshinae, F. wenoensis

Favusella pessagnoi

Citation: Favusella pessagnoi Michael 1973
taxonomic rank: Species
Type specimens: Plate 4, figs. 4-6; Holotype: USNM 172797; Paratype: USNM 172798; Paratypes: F.M. 9; Pes­sagno Collection, University of Texas at Dallas.
Type locality: Tex 4 Denton County (Sample F.W. 29) ; Fort Worth Formation.
Type repository: Washington; USNM

Linked specimens: USNM-172797 USNM-172798

Current identification/main database link: Favusella washitensis (Carsey, 1926)


Original Description

Test large, a low trochospire of about two volutions of subglobular, inflated chambers which increase gradually in size; usually six in the last whorl; last chamber slightly protruding into a relatively wide umbilicus; periphery broadly rounded, peripheral out- line lobulate; sutures distinct, radial and straight; primary aperture interiomarginal extraumbilical without apertural lip or porticus; ornamentation composed of ridges forming equal sized polygonal (usually hexagonal) areas.

Etymology:
in honor of Dr. Emile A. Pessagno, Jr., University of Texas at Dallas, in recognition of his work on Cretaceous Foraminifera.

Extra details from original publication
Remarks: F. pessagnoi, n. sp., is similar to Hed­bergella trocoidea (Gandolfi) in both the shape and arrangement of chambers. It differs, however, by having the cancellate ornamentation characteristic of Favusella, n. genus. This species differs from F. washitensis (Carsey) by having more chambers in the last whorl (usually six) that increase gradually in size and by having a lobulate periphery.
Range: Upper Albian: Hedbergella implicata Sub­ zone to H. punctata Subzone of the F. washitensis Assemblage Zone.
Occurrence: F. pessagnoi, n. sp., is abundant in the Fort Worth Formation and frequent in the Duck Creek and Denton Formations of the North Central Texas area.

References:

Michael, F. Y. (1973). Planktonic foraminifera from the Comanchean Series (Cretaceous) of Texas. Journal of Foraminiferal Research. 2 (1972)(4): 200-220. gs


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Favusella pessagnoi compiled by the pforams@mikrotax project team viewed: 20-5-2024

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