Skip to Main Content

Late Ordovician (Sandbian) ostracods from the Ardwell Farm Formation, SW Scotland

Mohibullah Mohibullah, Thijs R. A. Vandenbroucke, Mark Williams, James D. Floyd, Tonu Meidla, Jan A. Zalasiewicz and David J. Siveter
Late Ordovician (Sandbian) ostracods from the Ardwell Farm Formation, SW Scotland
Scottish Journal of Geology (May 2011) 47 (1): 57-66


The lower part of the Late Ordovician Ardwell Farm Formation of the Girvan district in SW Scotland yields a low-diversity ostracod fauna comprising six species. Many of these ostracods are biostratigraphically short-ranging North American taxa limited to an interval equivalent to the gracilis and bicornis graptolite biozones. These species include 'Ctenobolbina' ventrospinosa and Baltonotella parsispinosa that permit inter-regional correlation with the Sandbian strata of the USA and Arctic Canada. This chain of correlation is also confirmed by chitinozoans, such as Belonechitina hirsuta, that occur with the ostracods in the Ardwell Farm Formation. Although allochthonous and transported by turbidity currents into a deep-water clastic-rich basin, the ostracod fauna of the Ardwell Farm Formation resembles other Ordovician deep-water ostracod biotopes, characterized by podocope ostracods and low species diversity. Alternatively the ostracods might simply have been transported from a carbonate ramp setting.

ISSN: 0036-9276
EISSN: 2041-4951
Serial Title: Scottish Journal of Geology
Serial Volume: 47
Serial Issue: 1
Title: Late Ordovician (Sandbian) ostracods from the Ardwell Farm Formation, SW Scotland
Affiliation: University of Leicester, Department of Geology, Leicester, United Kingdom
Pages: 57-66
Published: 201105
Text Language: English
Publisher: Geological Society Publishing House for the Geological Societies of Edinburgh and Glasgow, Bath, United Kingdom
References: 68
Accession Number: 2014-045225
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sect., geol. sketch map
N55°15'00" - N55°15'00", W04°50'60" - W04°50'60"
Secondary Affiliation: Universite Lille I, FRA, FranceHeriot-Watt University, GBR, United KingdomUniversity of Tartu, EST, Estonia
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201427
Close Modal

or Create an Account

Close Modal
Close Modal