Where: Neuquen, Argentina (38.9° S, 70.2° W: paleocoordinates 36.4° S, 32.1° W)
• coordinate estimated from map
When: Kimmeridgian (157.3 - 152.1 Ma)
• This formation was described by GROEBER(1946: 182) as "Tordillense" and constitutes the basal portion of the Andico Supergroup, just above the Inter-Upper Jurassic or Araucarian Unconformity ( LEANZAet al., 1977).
Environment/lithology: marginal marine; green, red, silty, conglomeratic sandstone
Size class: macrofossils
Collection methods: The species mentioned for this Fm were those mentioned by Lambert (1956), cited in the paper.
Primary reference: H. Leanza, A. Zeiss, A. Cione, W.C. Dullo, E. Flugel, J.I. Carate-Zubillaga, and Z. Gasparini. 1990. Upper Jurassic Lithographic Limestones from Argentina (Neuquen Basin): Stratigraphy and Fossils. Facies 22:169-186 [J. Alroy/J. Martinelli]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 135628: authorized by John Alroy, entered by Julieta Martinelli on 28.10.2012
Creative Commons license: CC BY (attribution)