I-757 (Ordovician of the United States)

Where: Carter County, Oklahoma (34.4° N, 97.1° W: paleocoordinates 21.4° 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 lime mudstone and lithified wackestone

• Within unit 2, described as "Thick- to thin-bedded lime mudstone with common intraclastic wackestone to packstone, uncommon skeletal grainstone, and sparse oolitic grainstone. Poorly fossiliferous. Small stromatolites [at various intervals]."

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 106754: authorized by Melanie Hopkins, entered by Melanie Hopkins on 29.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Proetida - Bathyuridae
Petigurus cullisoni
Petigurus cullisoni Loch 2007 trilobite
2 cranidium, 1 pygidium
 Asaphida - Asaphidae
Isoteloides peri
Isoteloides peri Fortey 1979 trilobite
3 cranidia, 10 pygidia, 2 librigena