Where: Paraguay (25.4° S, 57.3° W: paleocoordinates 44.8° S, 142.4° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Vargas Pena Shale Formation, Llandovery (443.4 - 433.4 Ma)

• Harrington provisionally places this formation as Llandovery. Grahn and Gutierrez (2001, PBDB ref. 7139), on the basis of chitinizoan zonation, conclude that it spans Rhuddanian to Telychian ages.

• formation-level stratigraphic resolution

Environment/lithology: marine; micaceous claystone and argillaceous sandstone

Collection methods: I have combined lists from type locality (responsible for the great majority of taxa) and from the "poor and scarce outcrops." See PBDB collection 908 for additional taxa.

Primary reference: H. J. Harrington. 1972. Silurian of Paraguay. Geological Society of America Special Paper 133:41-50 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 25570: authorized by Michael Foote, entered by Michael Foote on 18.09.2002, edited by Pete Wagner and Austin Hendy

Creative Commons license: CC BY (attribution)