Caesar Creek Lake, Liberty beds (Ordovician of the United States)

Also known as collection OH-7, Caesars Creek, Flat Fork Creek

Where: Warren County, Ohio (39.5° N, 84.1° W: paleocoordinates 25.7° S, 57.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bull Fork Formation, Richmondian (449.5 - 443.7 Ma)

• " 'Liberty biofacies' in the Bull Fork Formation." = Liberty Formation of other writers.

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; claystone and shelly/skeletal limestone

• " [...] deposited in deeper water, lower-energy environments, [...]. Water depths were below fair-weather wave base but within the zone of storm-current reworking, [...] "
• " [...] interbedded clay shale and thin fossiliferous limestone [...]. Preserved faunas contains diverse, abundant brachiopods, bryozoans, corals, stromatoporoids, gastropods, nautiloids, pelecypods, ostracodes, trilobites, and crinoids."

Size class: macrofossils

Preservation: cast

Collection methods: MU = Limper Museum of Geology at Miami University

Primary reference: R. C. Frey. 1995. Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati Arch region of Kentucky, Indiana, and Ohio. U.S. Geological Survey Professional Paper 1066P:1-126 [S. Holland/S. Holland]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88035: authorized by Björn Kröger, entered by Torsten Liebrecht on 30.03.2009, edited by Loic Villier

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Orthocerida - Orthoceratidae
Pleurorthoceras clarksvillense Foerste 1924
MU 29856 (suite of 5 specimens)
 Orthocerida - Proteoceratidae
Treptoceras fosteri Miller 1875
MU 420T, 29858 (suite of 5 specimens)
Treptoceras cincinnatiensis Miller 1875
MU 29863
Asteroidea
 Euaxosida - Palasterinidae
Jugiaster speciosus Miller and Dyer 1878 sea star