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Classification of the meridionally costellate Cretaceous planktonic Foraminifera

Hamed A. El-Nakhal
Classification of the meridionally costellate Cretaceous planktonic Foraminifera
Journal of Micropalaeontology (May 2002) 21, Part 1: 1-8


The meridionally arranged rugosity, which is restricted to the Cretaceous globigerines, is given a superfamily taxonomic status. The globigerines displaying this type of ornamentation are placed in the Rugoglobigerinacea, which is subdivided into two families: the Rugoglobigerinidae and the Abathomphalidae. The Rugoglobigerinidae includes the forms having an umbilical primary aperture with a tegillum (Rugoglobigerina Bronnimann, Trinitella Bronnimann, and Plummerita Bronnimann). The Abathomphalidae includes the genera which have an umbilical-extraumbilical to spiro-umbilical primary aperture with a tegillum (Abathomphalus Bolli, Loeblich & Tappan, and Kassabella El-Nakhal), or a porticus (Meridionalla El-Nakhal, and Badriella n. gen.). Badriella is introduced as a new genus with B. mouradi n. sp. (= hypotype of Praeglobotruncana loeblichae Douglas) as a type species, to accommodate the meridionally costellate species with compressed chambers and umbilical-extraumbilical primary aperture, which were previously assigned to Praeglobotruncana Bermudez. The Rugoglobigerinacea may have evolved from a hedbergelline ancestor during the latest Albian via the development of the meridinally arranged rugosity.

ISSN: 0262-821X
EISSN: 2041-4978
Serial Title: Journal of Micropalaeontology
Serial Volume: 21, Part 1
Title: Classification of the meridionally costellate Cretaceous planktonic Foraminifera
Author(s): El-Nakhal, Hamed A.
Affiliation: Islamic University of Gaza, Department of Environment and Earth Science, Gaza, Israel
Pages: 1-8
Published: 200205
Text Language: English
Publisher: British Micropalaeontological Society, London, United Kingdom
References: 35
Accession Number: 2003-037176
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200312
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