Catalog - Globorotalia greenhornensis Catalog - Globorotalia greenhornensis

CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia greenhornensis Morrow 1934

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 -> G -> Globorotalia -> Globorotalia greenhornensis
Other pages this level: << < G. dominicana, G. edgari, G. ehrenbergi, G. emilei, G. extans, G. faragi, G. flabelliformis, G. fohsi, G. fohsi andina, G. fohsi robusta, G. formosa formosa, G. formosa gracilis, G. gavalae, G. gemma, G. globigeriniformis, G. greenhornensis, G. hadii, G. haunsbergensis, G. haynesi, G. hemisphaerica, G. hessi, G. hexacamerata, G. hirsuta aemiliana, G. hirsuta eastropacia, G. hispidicidaris, G. humerosa, G. hungarica, G. ikebei, G. imitata, G. inconspicua, G. inconspicua aculeata> >>

Globorotalia greenhornensis

Citation: Globorotalia greenhornensis Morrow 1934
Taxonomic rank: species
Type specimens: Plate 31, figures 1a-c; 75378
Type age (chronostrat): Cenomanian
Type locality: Sec. 31, T. 218., R. 22N., Hodgeman County, Kansas, U. S. A.
Type repository: Washington; USNM

Linked specimens: USNM-75378

Current identification/main database link: Thalmanninella greenhornensis (Morrow, 1934)


Original Description

Test trochoid, biconvex, dorsal side distinctly convex, ventral side strongly convex; periphery slightly scalloped, chambers numerous, eight or nine in final whorl, dorsal side flattened, bordered by a thickened, slightly elevated margin which curves forward from the edge of the preceding chamber to the spiral suture, chambers seen from the ventral side inflated, extended in the direction of the axis of coiling producing a deep steepsided umbilical area; sutures on the ventral side strongly depressed, curving gently backward; periphery acute, wall finely perforate; aperture umbilical at base of last chamber. 

Size:
Diameter, 0.66 mm., thickness, 0.22mm.

Extra details from original publication
The characters of G. greenhornensis are distinctive and quite constant, making it very easy to distinguish from other species with which it is associated. This species is very abundant locally and apparently restricted to the Greenhorn formation.

References:

Morrow, A. L. (1934). Foraminifera and ostracoda from the Upper Cretaceous of Kansas. Journal of Paleontology. 8: 186-205. gs


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Globorotalia greenhornensis compiled by the pforams@mikrotax project team viewed: 21-5-2026

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