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GEOREF RECORD

A new Lagerstaette from the Middle Ordovician St. Peter Formation in northeast Iowa, USA

Huaibao P. Liu, Robert M. McKay, Jean N. Young, Brian J. Witzke, Kathlyn J. McVey and Xiuying Liu
A new Lagerstaette from the Middle Ordovician St. Peter Formation in northeast Iowa, USA
Geology (Boulder) (November 2006) 34 (11): 969-972

Abstract

A new fossil fauna has been discovered from a recently recognized shale unit within the middle Ordovician St. Peter Formation in northeast Iowa. It contains a variety of invertebrates and vertebrates, including soft body tissues, impressions, and 3-dimensionalpreservations. The exceptional preservation reveals a new Konservat-Lagerstaette, the Winneshiek Lagerstaette, and opens a unique window into the community that inhabited the margins of the Laurentian cratonic seaway during Middle Ordovician transgression. Among the fossils, several conodont assemblages, including the apparatus of enigmatic coleodontids, are preserved. Some conodont assemblages associated with soft body tissues are particularly noteworthy.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 34
Serial Issue: 11
Title: A new Lagerstaette from the Middle Ordovician St. Peter Formation in northeast Iowa, USA
Affiliation: Iowa Department of Natural Resources, Geological Survey, Iowa City, IA, United States
Pages: 969-972
Published: 200611
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 30
Accession Number: 2006-091344
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
N43°04'60" - N43°30'00", W92°04'60" - W91°34'60"
Secondary Affiliation: Luther College, 700 College Drive, Decorah, Iowa 52101, USA, United StatesUniversity of Iowa, Iowa City, Iowa 52242, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200651
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