ammonites
Puesto Miguez (Triassic of Argentina)

Also known as Minas de Petroleo, Mendoza

Where: Mendoza, Argentina (33.1° S, 69.1° W: paleocoordinates 49.8° S, 34.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Upper Member (Potrerillos Formation), Carnian (235.0 - 221.5 Ma)

• fossil insects in the second unit, 10m from the bottom, the unit is 50m thick

Environment/lithology: fluvial-lacustrine; sandy, carbonaceous shale and sandy, conglomeratic claystone

• Arenaceous to carbonaceous shales, or fine clays, often markedly to finely laminated, with frequent plants in much greater variety than in either of the higher horizons.

Size class: macrofossils

Preservation: mold/impression

Reposited in the MACN, MLP

Primary reference: G. R. Wieland. 1925. Rhaetic crane flies from South America. American Journal of Science 9:21-28 [D. Smith/E. Leckey] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 84244: authorized by Dena Smith, entered by Erin Leckey on 30.09.2008, edited by Jered Karr