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GEOREF RECORD

A review of the Ordovician acritarch genus Barakella Cramer & Diez 1977

Abstract

The Ordovician acritarch genus Barakella Cramer & Diez 1977 and two species, B. felix and B. fortunata, bearing characteristic anastomosing filamentous elements at one pole were first described from the subsurface of the Kasba Tadla Basin, Morocco. Subsequently, another species was described from the South Chinese Ordovician and was later attributed to the genus as Barakella rara. New material from the type locality in Morocco and additional sections in South China are used for a review of the genus Barakella. Based on this review, including statistical analysis, Barakella rara is considered a junior synonym of Barakella felix. Barakella is a useful taxon for biostratigraphical applications in the Ordovician. Its first appearance datum (FAD) lies in the early Floian (Early Ordovician, time slices 2a-2b) in both South China and Wales. Except for a doubtful record from Sweden, all records of Barakella are from the peri-Gondwana margin, making the genus an indicator of the peri-Gondwana palaeoprovince. The appearance of Barakella in South China indicates that Barakella possibly originated in shallow-water nearshore environments, and later spread to offshore environments.


ISSN: 0191-6122
EISSN: 1558-9188
Serial Title: Palynology
Serial Volume: 41
Serial Issue: SUPPL.
Title: A review of the Ordovician acritarch genus Barakella Cramer & Diez 1977
Title: Special issue in honor of Gordon D. Wood
Author(s): Yan KuiLi JunMolyneux, Stewart G.Raevskaya, Elena G.Servais, Thomas
Author(s): Miller, Merrell A.editor
Author(s): Servais, Thomaseditor
Author(s): Wicander, Reededitor
Affiliation: Chinese Academy of Sciences, Nanjing Institute of Geology and Palaeontology, State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing, China
Affiliation: IRF Group, Tulsa, OK, United States
Pages: 80-94
Published: 201711
Text Language: English
Publisher: American Association of Stratigraphic Palynologists, Dallas, TX, United States
References: 87
Accession Number: 2018-039822
Categories: PaleobotanyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. 1 plate, sketch map
N31°00'00" - N32°00'00", E110°00'00" - E112°00'00"
N25°00'00" - N26°00'00", E102°00'00" - E103°00'00"
N28°00'00" - N30°00'00", E106°30'00" - E109°00'00"
Secondary Affiliation: British Geological Survey, GBR, United KingdomFGUNPP, RUS, Russian FederationUniversite de Lille I, FRA, France
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Abstract, Copyright, American Association of Stratigraphic Palynologists. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 2018
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