ammonites
Ischigualasto I tracksite (Triassic of Argentina)

Where: La Rioja, Argentina (30.2° S, 67.9° W: paleocoordinates 49.8° S, 37.1° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Los Rastros Formation, Ladinian (242.0 - 235.0 Ma)

• uppermost part of formation; late Ladinian

• bed-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; sandstone and limestone

• "lagoonal or fluvial"
• "Alternated sandstone with green mudstone, with carbonaceous layers and coal beds. The trackways are found in a limestone pavement."

Size class: macrofossils

Preservation: trace

Collected by F. v. Huene in 1924-1960; reposited in the MLP

Collection methods: surface (in situ), peel or thin section,

Primary reference: G. Leonardi. 1994. Annotated Atlas of South America Tetrapod Footprints (Devonian to Holocene) with an Appendix on Mexico and Central America. República Federativa do Brasil, Ministério de Minas e Energia, Secretaria de Minas e Metalurgia, Companhia de Pesquisa de Recursos Minerais, Brasília 1-248 [M. Carrano/K. Maguire/M. Carrano] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 74751: authorized by Matt Carrano, entered by Matt Carrano on 28.08.2007