Also known as Reef 1821

Where: El Paso County, Texas (31.9° N, 106.5° W: paleocoordinates 15.2° S, 87.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: McKelligon Canyon Formation (El Paso Group), Arenig (478.6 - 466.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

Size class: macrofossils

Primary reference: D. F. Toomey and M. H. Nitecki. 1979. Organic buildups in the Lower Ordovician (Canadian) of Texas and Oklahoma. Fieldiana Geology 2:1-181 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 80082: authorized by Wolfgang Kiessling, entered by Uta Merkel on 02.04.2008

Creative Commons license: CC BY (attribution)