Where: Mendoza, Argentina (33.6° S, 69.9° W: paleocoordinates 33.2° S, 34.4° W)
• coordinate stated in text
When: Spitidiscus riccardii ammonoid zone, Agua de la Mula Member (Agrio Formation), Late/Upper Hauterivian (136.4 - 130.0 Ma)
• The Agrio Formation is some 120 m thick here but is incomplete, as it is cut by a thrust.
Environment/lithology: fine-grained, gray, yellow limestone and green shale
Size class: macrofossils
Preservation: adpression
Collected by M.B. Aguirre Urreta
Primary reference: P. F. Rawson and M. B. Aguirre-Urreta. 2012. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The Hauterivian genus Spitidiscus. Cretaceous Research 33:97-105 [J. Alroy/J. Martinelli]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 135507: authorized by John Alroy, entered by Julieta Martinelli on 27.10.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
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