Where: San Juan, Argentina (30.4° S, 68.8° W: paleocoordinates 34.1° S, 135.2° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Atavograptus atavus graptolite zone, La Chilca Formation, Rhuddanian (443.4 - 440.8 Ma)
• Age based on fact that beds containing the brachiopods are interbedded with or above beds of Atovograptus atavus Biozone.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; shelly/skeletal sandstone and shale
Size class: macrofossils
Preservation: replaced with silica
Collection methods: Brachiopods studied and listed; other higher taxa simply mentioned; graptolites listed for two of the sections that contain them. See location details.
Primary reference: J. L. Benedetto. 1995. Braquiopodos del Silurica temprano malvinocafrico (Formacion La Chilca), Precordillera Argentina. Géobios 28(4):425-457 [M. Foote/M. Foote/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 185899: authorized by Pete Wagner, entered by Pete Wagner on 23.05.2017
Creative Commons license: CC BY (attribution)