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Rio Los Tarros tracksite (Triassic of Argentina)

Also known as Leonardi locality 15

Where: La Rioja, Argentina (29.6° S, 68.1° W: paleocoordinates 38.7° S, 31.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Los Colorados Formation (Agua de la Peña Group), Norian (221.5 - 205.6 Ma)

• formation is considered to be latest Triassic in age

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; red siltstone

• "The sequence was interpreted as deposited by moderately sinuous fluvial systems, which laterally interfinger with and grade into horizontally bedded flood-plain deposits. To the top of the sequence, thin-bedded sandstones and siltstones dominate and were deposited in ponds and as crevasse splays in overbank settings" (Arcucci et al. 2004)
• "reddish siltstones"

Size class: macrofossils

Preservation: trace

Collected by J. F. Bonaparte & G. Leonardi in 1966-1981

Collection methods: surface (in situ),

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 85569: authorized by Matthew Carrano, entered by Matthew Carrano on 09.01.2009

Creative Commons license: CC BY (attribution)