Late Devonian (Frasnian) Brachiopod Community Patterns in Western Canada and Iowa

Four communities which are thought to be primarily depth-dependent have been recognized in the Frasnian of Western Canada. From onshore to offshore these are: Lingula, Eleutherokomma, Nervostrophia-Theodossia-Devonoproductus, and Atrypa-Schizophoria. The validity of these communities is supported by...

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Bibliographic Details
Published in:Journal of paleontology 1977-01, Vol.51 (1), p.181-196
Main Author: De Keyser, T. L.
Format: Article
Language:English
Subjects:
Biological taxonomies
Cluster analysis
Coefficients
Communities
Fauna
Fossils
Frasnian age
Limestones
Paleoecology
Taxa
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Summary:Four communities which are thought to be primarily depth-dependent have been recognized in the Frasnian of Western Canada. From onshore to offshore these are: Lingula, Eleutherokomma, Nervostrophia-Theodossia-Devonoproductus, and Atrypa-Schizophoria. The validity of these communities is supported by a section in Iowa where statistical methods (cluster analysis based on both presence-absence and numerical abundance versions of the Jaccard similarity coefficient) were used in describing a transition from an Atrypid-Schizophoria Community to a Theodossia-Nervostrophia-Devonoproductus Community.
ISSN:0022-3360
1937-2337