KR-860 (Ordovician of the United States)

Where: Kiowa County, Oklahoma (35.0° N, 98.6° W: paleocoordinates 20.1° S, 82.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Petigurus cullisoni trilobite zone, Kindblade Formation, Cassinian (482.3 - 470.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, bioturbated lime mudstone and lithified, intraclastic wackestone

• Within unit 10, described as "Thin-bedded, laminated to bioturbated, poorly fossiliferous lime mudstone. Uncommon massive lime mudstone, sparse intraclastic to pelletal wackestone."

Size class: macrofossils

Collected by J. D. Loch

Collection methods: bulk,

Primary reference: J. D. Loch. 2007. Trilobite biostratigraphy and correlation of the Kindblade Formation (Lower Ordovician) of Carter and Kiowa Counties, Oklahoma. Oklahoma Geological Survey Bulletin 149:1-154 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 106960: authorized by Melanie Hopkins, entered by Melanie Hopkins on 30.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Proetida - Bathyuridae
Strigigenalis crassimarginata, Petigurus cullisoni
Strigigenalis crassimarginata Cullison 1944 trilobite
1 cranidium, 2 pygidia
Petigurus cullisoni Loch 2007 trilobite
1 cranidium, 2 pygidia, 2 librigena
 Asaphida - Asaphidae
Isoteloides peri
Isoteloides peri Fortey 1979 trilobite
1 cranidium, 2 librigena