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Diverse Nonmarine Biota from the Whidbey Formation (Sangamonian) at Point Wilson, Washington

Published online by Cambridge University Press:  20 January 2017

Paul F. Karrow ,
Adolph Ceska ,
Richard J. Hebda ,
Barry B. Miller ,
Kevin L. Seymour  and
Alison J. Smith
Paul F. Karrow
Affiliation:
Department of Earth Sciences and Quaternary Sciences Institute, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
Adolph Ceska
Affiliation:
Royal British Columbia Museum, 675 Belleville Street, Victoria, Britich Columbia, Canada V8V 1X4
Richard J. Hebda
Affiliation:
Royal British Columbia Museum, 675 Belleville Street, Victoria, Britich Columbia, Canada V8V 1X4
Barry B. Miller
Affiliation:
Department of Geology, Kent State University, Kent, Ohio 44242
Kevin L. Seymour
Affiliation:
Department of Vertebrate Paleontology, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario, Canada M5S 2C6
Alison J. Smith
Affiliation:
Department of Geology, Kent State University, Kent, Ohio 44242
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Abstract

Previously undescribed plant and animal fossils from the Whidbey Formation represent two environments. An upper sand unit contains predominantly terrestrial molluscs (4 taxa), insects, and a vole (cf. Phenacomys), whereas a lower clay unit contains ostracodes (9 taxa), freshwater molluscs (6 taxa), insects (9 taxa), freshwater plant seeds (6 taxa), and fish (cf. Gasterosteus : stickleback). These taxa are compatible with interglacial climatic conditions on a coastal plain environment. The inferred freshwater and terrestrial environments of the Whidbey Formation imply local tectonic subsidence of the regional since the last interglaciation.

Type
Research Article
Information
Quaternary Research , Volume 44 , Issue 3 , November 1995 , pp. 434 - 437
Copyright
University of Washington

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