Catalog - Globorotalia caylaensis

CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia caylaensis Gartner & Hay 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 -> G -> Globorotalia -> Globorotalia caylaensis
Other pages this level: << < G. berwaliana, G. birnageae, G. bollii, G. bonairensis, G. bononiensis, G. bouregregensis, G. broedermanni lodoensis, G. bullbrooki, G. bykovae, G. bykovae minoritesta, G. californica, G. californica Smith, G. canariensis minima, G. capdevilensis, G. cavernula, G. caylaensis, G. centralis, G. cerroazulensis cunialensis, G. cerroazulensis pomeroli, G. cerroazulensis possagnoensis, G. challengeri, G. chapmani, G. cibaoensis, G. cocoaensis, G. collactea, G. conica, G. conicotruncata, G. conomiozea, G. conomiozea mons, G. convexa, G. crassacarina> >>

Globorotalia caylaensis

Citation: Globorotalia caylaensis Gartner & Hay 1962
Rank: Species
Type locality: Mont Cayla (Aude, eastern Aquitaine, France).
Type age (chronostrat): Illerdian (Early Eocene)
Type sample (& lithostrat): marne blue
Type specimens: Holotype: T-1810, Pl. I, figs. 2a-c. Paratypes: T-1810 (1-15).; Pl. 1, figs. 2a-c
Described on page(s) : 561-2

Current identification/main database link: Pearsonites lodoensis (Mallory 1959)


Original Description
Diagnosis.- Radial periphery faintly lobate; axial periphery rounded; umbilicus small, deep, open, surrounded by coarse spines; sutures on umbilical side straight, radial, depressed; sutures on spiral side slightly curved; aperture exteriomarginal, umbilical-extraumbilical.

Description.- Test trochoid, biconvex, equatorial periphery rounded; test calcareous perforate, entirely covered by spines which are coarse around the umbilicus; all the chambers exposed on the spiral side, but only those of the last volution are distinst; five to six chambers of the last volution visible on the umbilical side; sutures on umbilical side straight, radial, flush, becoming depressed in the last volution of mature specimens; sutures; sutures on spiral side slightly curved, tangential, depressed near periphery; umbilicus small, deep, open; aperture interiomarginal lunate arch, extending over about two-thirds of the base of the apertural face, usually with narrow lip, umbilical-extraumbilical, sinistral coiling prevalent.

Size: Maximum diameter of holotype: 0.32 mm. Range of max. diameter: 0.20-0.32 mm.

Etymology: From Mount Cayla

Extra details from original publication
Remarks: Globorotalia caylaensis n. sp. differs from Globorotalia mckannai (White) in that the latter has a more convex spiral side, more globular chambers, wider umbilicus, and a more lobate periphery and rounded margin. Globorotalia angulata (White) has a larger umbilicus, more angular margin sometimes with a faintly developed keel, and a more extraumbilical position of the aperture.

Occurrence: This species occurs in the "marne bleue" of Mont Cayla. Hamilton has found similar specimens in a Paleocene fauna from the Hessguyot in the Pacific.

References:

Gartner, S. & Hay, W. W. (1962). Planktonic foraminifera from the type Ilerdian. Eclogae Geologicae Helvetiae. 55(2): 553-572. gs V O


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Globorotalia caylaensis compiled by the pforams@mikrotax project team viewed: 22-1-2022

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