Chañares River, 2 km north (Triassic of Argentina)

Where: La Rioja, Argentina (29.8° S, 67.8° W: paleocoordinates 49.9° S, 37.8° 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 60293: 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
 Dinosauromorpha -
Lagosuchus talampayensis n. gen. n. sp.1
Lagosuchus talampayensis n. gen. n. sp.1 Romer 1971 ornithodiran
UPLR 09
 Pseudosuchia - Gracilisuchidae
Gracilisuchus stipanicicorum n. gen. n. sp.2 Romer 1972 archosaur
UPLR 08 (holotype)
 Diapsida - Proterochampsidae
Tropidosuchus romeri3 Arcucci 1990 archosauromorph
UPLR, unnumbered
Osteichthyes
 Therapsida - Cynodontia
Cynodontia indet.2 cynodont
"gomphodont skull"