I-841 (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, intraclastic wackestone

• Within unit 3, described as "Thin- to medium-bedded lime mudstone. Common intraclastic lime wackestone, sparse skeletal grainstone and dense lime mudstone with conchoidal fracture. Sparsely fossiliferous."

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 106763: 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
Bolbocephalus cf. convexus, Jeffersonia "sp. 2", Petigurus cullisoni
Bolbocephalus cf. convexus Billings 1865 trilobite
2 pygidia
Jeffersonia "sp. 2" Poulson 1927 trilobite
1 cranidium
Petigurus cullisoni Loch 2007 trilobite
2 cranidia, 4 pygidia
 Asaphida - Asaphidae
Isoteloides peri
Isoteloides peri Fortey 1979 trilobite
3 cranidia, 1 pygidium