Sample 12, Liberty Fm., Ripley Co., IN (Ordovician of the United States)

Where: Ripley County, Indiana (41.0° N, 86.7° W)

• Paleocoordinates: 22.0° S, 113.7° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Liberty Formation, Richmondian (449.6 - 445.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; shelly/skeletal, gray, argillaceous limestone and shale

• more limestone than in the waynesville; these limestones are less argillaceous, more crystalline, and contain small distinctive orange splotches

Preservation: replaced with calcite

Collection methods: Collection methods: The creek bed at the base of the section was used as a datum plane and the section was divided into 15 five-foot zones and an upper 3 ft. zone, with a collection taken from each zone.

Primary reference: D. E. Von Tress. 1954. Some Waynesville and Liberty Bryozoa from Versailles, Ripley County, Indiana. 1-62 [A. Miller/K. Layou/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 6911: authorized by Arnold Miller, entered by Karen Layou on 10.04.2000

Creative Commons license: CC0 (CC0)

Taxonomic list

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Stenolaemata
 Trepostomata - Halloporidae
Hallopora subnodosa
 Trepostomida - Monticuliporidae
Homotrypa cf. nodulosa