Catalog - Pulvinulina arca contusa Catalog - Pulvinulina arca contusa

CATALOG OF ORIGINAL DESCRIPTIONS: Pulvinulina arca contusa Cushman 1926

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 -> P -> Pulvinulina -> Pulvinulina arca contusa
Other pages this level: P. arca, P. arca contusa, P. crassata, P. crassata densa, P. gilberti, P. menardii fimbriata, P. menardii tumida, P. scitula, P. tricarinata, P. tumida flexuosa, P. velascoensis

Pulvinulina arca contusa

Citation: Pulvinulina arca contusa Cushman 1926
taxonomic rank: variety
Type specimens: Cushman colln. 5079; not figured in Cushman 1926
Type locality: near Coco, Hacienda El Limon, San Luis Potosi, Mexico.
Type repository: Washington; USNM

Linked specimens: USNM-5080 USNM-5079

Current identification/main database link: Contusotruncana contusa (Cushman, 1926)


Original Description

Variety differing from the typical in the greater size, much greater elevation of the spire on the dorsal side, and particularly striking the concave appearance of the chambers on the dorsal side, those of one coil coming in line with preceding ones so that the entire test develops something of a pyramidal form.

Extra details from original publication
This variety has much the appearance of a conical, soft hat, in which there are made dents running from the apex to the border. This variety is often very abundant in certain horizons replacing to a large measure the typical form.

References:

Cushman, J. A. (1926c). Some foraminifera from the Mendez shale of Eastern Mexico. Contributions from the Cushman Laboratory for Foraminiferal Research. 2(1): 16-24. gs


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Pulvinulina arca contusa compiled by the pforams@mikrotax project team viewed: 1-3-2024

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