TF-293. 1 mile north of White's Crossing, 10 miles south of Mason (Ordovician of the United States)

Where: Mason County, Texas (30.6° N, 99.2° W: paleocoordinates 19.7° S, 90.8° W)

• outcrop-level geographic resolution

When: Gorman Formation, Demingian (485.4 - 478.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Primary reference: J. Bridge and P.E. Cloud. 1947. New gastropods and trilobites critical in the correlation of Lower Ordovician rocks. The American Journal of Science 245:545-559 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 56493: authorized by Pete Wagner, entered by Pete Wagner on 20.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Euomphalina - Ophiletidae
Lecanospira sanctisabae Roemer 1849 snail