CATALOG OF ORIGINAL DESCRIPTIONS: Praeglobotruncana hessi compressiformis Pessagno 1962

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 -> Praeglobotruncana -> Praeglobotruncana hessi compressiformis
Other pages this level: P. algeriana, P. barbui, P. biconvexa gigantea, P. bronnimanni, P. clotensis, P. coarctata, P. compressa, P. crassa, P. gigantea, P. hagni, P. hansbollii, P. hessi compressiformis, P. hessi hessi, P. hilalensis, P. inermis, P. klausi, P. lehmanni, P. loeblichae, P. mattsoni, P. modesta, P. oraviensis, P. oraviensis trigona, P. pauliani, P. prahovae, P. primitiva, P. pseudoalgeriana, P. rohri, P. shirakinensis, P. stephani gibba,

Praeglobotruncana hessi compressiformis

Citation: Praeglobotruncana hessi compressiformis Pessagno 1962
Rank: sub-species
Type locality: Rio Yauco Fm., Barrio Qaebrada Limos, 1.43 km N. 50 degrees W. of Hacienda Josefa, Puerto Rican Coordinates 126,837 meters E., 24,775 meters N. northwest of Ponce, Panuelas Quandrangle, PR.
Holotype Repository: Washington; USNM
Type & figured specimens: 640602

Linked specimens: USNM-640604 USNM-640603 USNM-640602

Current identification/main database link: Globotruncanella compressiformis (Pessagno, 1962)


Original Description
Spiral side flattened to gently convex; periphery lobulate chambers increasing rapidly in size; nepionic chambers spherical; later chambers becoming markedly ovate and highly compressed; early chambers coarsely spirose; last 2-3 chambers smooth, often a modified hemispherical shape with a sharp dorsal keel which appears to be radial, hyaline, perforate; sutures depressed, radial, slightly curved on both spiral and umbilical sides; aperture interiomarginal; appears to be a low arch, extraumbilical in position; large umbilical flaps extend into a broad umbilicus from each chamber.

References:

Pessagno, E. A. (1962). The Upper Cretaceous stratigraphy and micropaleontology of south-central Puerto Rico. Micropaleontology. 8(3): 349-368. gs


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Praeglobotruncana hessi compressiformis compiled by the pforams@mikrotax project team viewed: 1-10-2020

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