Where: Argentina (24.5° S, 65.1° W: paleocoordinates 43.6° S, 132.8° W)

• coordinate estimated from map

• local area-level geographic resolution

When: upper Member (Lipeon Formation), Telychian to Telychian (438.5 - 430.5 Ma)

• Age is for basal levels of upper member. Other collections (e.g. PBDB 25062) use Wenlock/Ludlow age. Grahn and Gutierrez (2001, PBDB ref. 7139) give an age of late Telychian to Sheinwoodian, based on chitinozoan zonation.

• member-level stratigraphic resolution

Environment/lithology: marine; micaceous, argillaceous sandstone and micaceous, argillaceous siltstone

Collection methods: List based on new material described here as well as synthesis of prior work (Table 1). Trilobites of Lipeon Formation included in PBDB Collections 25060-62, but present work contains new taxa.

Primary reference: B. G. Waisfeld and T. M. Sanchez. 1993. Trilobites Siluricos de la Formacion Lipeon en el noroeste Argentino (Sierra de Zapla, Provincia de Jujuy). Ameghiniana 30(1):77-90 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 25103: authorized by Michael Foote, entered by Michael Foote on 28.08.2002

Creative Commons license: CC BY (attribution)