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Stasis and extinction of Silurian (Llandovery-Wenlock) trilobite associations related to oceanic cyclicity

Journal of Paleontology

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Abstract

Silurian trilobites of the central United States belong to a series of temporally-successive associations which appeared abruptly, maintained taxonomic stasis for a time, and then disappeared abruptly. Their disappearance resulted from global perturbations of short-term duration and moderate magnitude, which caused substantial taxonomic replacement but no reorganization of major ecosystems. The most significant extinction and replacement in Silurian trilobite associations in the study area occurs near the Llandovery-Wenlock boundary. This turnover in trilobite associations appears to correspond to Jeppsson's Ireviken Event in his model of oceanic and climatic cyclicity. Major sea-level changes earlier in the Llandovery did not have a similar impact on trilobite associations.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Stasis and extinction of Silurian (Llandovery-Wenlock) trilobite associations related to oceanic cyclicity
Series title:
Journal of Paleontology
Volume
73
Issue:
2
Year Published:
1999
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Paleontology
First page:
320
Last page:
325