Chañares River, 5 km northeast (Triassic of Argentina)

Where: La Rioja, Argentina (29.8° S, 67.8° W: paleocoordinates 49.9° S, 37.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Chañares Formation (Agua de la Peña Group), Ladinian (242.0 - 237.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithology not reported

Size class: macrofossils

Preservation: concretion

Collected by A. Romer & J. Jensen in 1964; reposited in the MCZ, MLP

Collection methods: quarrying, mechanical,

Primary reference: A. S. Romer and J. A. Jensen. 1966. The Chañares (Argentina) Triassic reptile fauna. II. Sketch of the geology of the Río Chañares-Río Gualo region. Breviora 252:1-20 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60296: authorized by Matthew Carrano, entered by Matthew Carrano on 09.05.2006, edited by Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Diapsida - Doswelliidae
Tarjadia ruthae1 Arcucci and Marsicano 1999 archosauromorph
MCZ 4076, osteoderms
 Loricata - Rauisuchidae
Luperosuchus fractus n. gen. n. sp.2
Luperosuchus fractus n. gen. n. sp.2 Romer 1971 rauisuchid