Catalog - Pulvinulina crassata Catalog - Pulvinulina crassata

CATALOG OF ORIGINAL DESCRIPTIONS: Pulvinulina crassata Cushman 1925

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 crassata
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 crassata

Citation: Pulvinulina crassata Cushman 1925
taxonomic rank: species
Type age (chronostrat): Eocene; shale
Type locality: East bank of the Moctezuma River, Vera Cruz, Mexico
Type repository: Washington, USNM - presumably

Linked specimens: USNM-3026 USNM-371211 USNM-23714

Current identification/main database link: Morozovelloides crassatus (Cushman 1925)

Original Description

Test small, plano-convex, the dorsal side nearly flat, ventral side strongly convex, last-formed coil with 5 or 6 chambers; periphery subacute; chambers inflated, especially on the ventral side; sutures distinct, slightly depressed on the dorsal side, strongly so on the ventral side; periphery and surface closely set with short spinose processes, aperture elongate, on the inner edge of the ventral face of the last-formed chamber.

Diameter, 0.45-0.55 mm.

Extra details from original publication
This species in its more flattened form has six chambers in the last-formed coil, and is sometimes at the edge very thin with almost a keel developed. It is associated with the following variety [P. crassata var densa]


Cushman, J. A. (1925b). An Eocene fauna from the Moctezuma River, Mexico. Bulletin of the American Association of Petroleum Geologists. 9(2): 298-301. gs

Cushman, J. A. (1925e). Some new foraminifera from the Velasco shale of Mexico. Contributions from the Cushman Laboratory for Foraminiferal Research. 1(1): 18-23. gs

Pearson, P. N. & Berggren, W. A. (2006). Taxonomy, biostratigraphy, and phylogeny of Morozovelloides n. gen. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 41(Chap 10): 327-342. gs O


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

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