CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia acutispira Bolli and Cita 1960

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 acutispira
Other pages this level: G. acostaensis, G. acostaensis trochoidea, G. acrostoma, G. acrostoma partimlabiata, G. acutispira, G. adamantea, G. aequa bullata, G. africana, G. akersi, G. alamedillensis, G. albeari, G. almadenensis, G. amuria, G. andalusiana, G. anfracta, G. angulata abundocamerata, G. angulata kubanensis, G. angulata praepentacamerata, G. apanthesma, G. apertura, > >>

Globorotalia acutispira

Citation: Globorotalia acutispira Bolli and Cita 1960
Rank: Species
Type locality: Zone P4, Paderno d'Adda, N Italy
Holotype Repository: Milan, Italy; Collection of the Laboratory of Micropaleontology, University of Milan
Type & figured specimens: 1278

Current identification/main database link: Morozovella acutispira (Bolli and Cita 1960)


Original Description
"Test trochospirally coiled, the dimensions medium for the genus, constitued of 11-12 regularly and rapidly increasing chambers, with 4 in number in the last whorl. Chambers petaloid, bordered by a very large and projecting banded keel; spiral suture arcuate and retroversed; umbilical sutures depressed and radial; umbilical cavity very small and tight. Aperture slender, interiomarginal, extraumbilical-umbilical. Wall finely punctate. The peculiar characteristic of this species, from which is derived the specific name we intentionally selected, stems from the exceptional height of the spire corresponding to the initial whorl; this confers a biconvex profile to Globorotalia acutispira, characterized by a particularly sharp rise, quite angular, from the opposite side to that of the ultimate chamber. The spire thus rises to occupy an eccentric position with respect to the center of the fossil figure, which causes the noticeable increase in height of the chambers constituting the ultimate whorl. "

References:

Bolli, H. M. & Cita, M. B. (1960). Globigerine e Globorotalie del Paleocene di Paderno d'Adda (Italia). Rivista Italiana di Paleontologia e Stratigrafia. LXVI(3): 1-42. gs


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Globorotalia acutispira compiled by the pforams@mikrotax project team viewed: 28-9-2020

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