Where: Tamaulipas, Mexico (23.8° N, 99.3° W: paleocoordinates 25.5° S, 76.0° W)

• small collection-level geographic resolution

When: Santa Ana Limestone Member (Canon de Caballeros Formation), Homerian to Homerian (430.5 - 425.6 Ma)

• The authors indicate that the Santa Ana Member may be diachronous, as to the N some taxa there indicate an age of late Llandovery. They feel that it isn't diachronous, just the age determination needs more work.

• member-level stratigraphic resolution

Environment/lithology: sand shoal; lithified, shelly/skeletal grainstone

Primary reference: A. J. Boucot, R. B. Blodgett, and J. H. Stewart. 1997. European province Late Silurian brachiopods from the Ciudad Victoria area, Tamaulipas, northeastern Mexico. Geological Society of America Special Paper 321:273-293 [J. Alroy/M. Sommers/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5117: authorized by John Alroy, entered by Mike Sommers on 30.08.1999

Creative Commons license: CC BY (attribution)