Uspallata, Agua de la Zorra (Triassic of Argentina)

Where: Mendoza, Argentina (32.7° S, 69.4° W: paleocoordinates 51.7° S, 41.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Agua de la Zorra Formation (Uspallata Group), Middle Triassic (247.2 - 237.0 Ma)

• originally assigned to "Lower Rhaetian or Middle Triassic"

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; lithified mudstone and siltstone

• Accoding to López-Arbarello et al. (2010) and references within, the Agua de la Zorra Formation represents at least four cycle of lacustrine sediments, which corresponds with a postrift phase of the sequences proposed for the area, and thus might be correlated with the upper part of the Cerro de las Cabras Formation.
• López-Arbarello et al. (2010) describe the lithology of the Agua de la Zorra Formation as silt- and mudstones with few intercalations of fine-grained sandstones.

Size class: macrofossils

Collected by C. Rusconi & M. Tellechea

• MCNAM-PV

Primary reference: C. Rusconi. 1947. Reptil Triásico de Uspallata [Triassic reptile from Uspallata]. Boletin Paleontológico de Buenos Aires 22:1-2 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117454: authorized by Matthew Clapham, entered by Phillip Elliott on 21.09.2011, edited by Christina Feng, Matthew Carrano and Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Branchiopoda
 Diplostraca - Lioestheriidae
Euestheria forbesi clam shrimp
Osteichthyes
  -
Semionotus vallejensis n. sp.1 Rusconi 1950
MCNAM-PV 552 (Holotype)
Pholidophorus vallejensis n. sp.1 Rusconi 1947
MCNAM-PV 703 (Holotype)
Guaymayenia paramillisensis n. gen. n. sp.1 Rusconi 1946
MCNAM-PV 547 (Holotype)
Cenechoia paramillensis n. gen. n. sp.1 Rusconi 1946
MCNAM-PV 505 (Holotype)
Cenechoia sulcata n. sp.1 Rusconi 1947
MCNAM-PV 705 (Holotype), (MCNAM-PV 706) Paratype; MCNAM-PV 707, MCNAM-PV 708
Semionotus mendozaensis n. sp.1 Geinitz 1885
Unknown holotype (see López-Arbarello et al. 2010)
Eurynotus uspallatensis n. sp.1 Rusconi 1946
MCNAM-PV 546 (Holotype); MCNAM-PV 548, MCNAM-PV 551
Reptilia
 Thecodontia -
"Ocuyuntaia arquata n. gen. n. sp." = Ocoyuntaia arquata2
"Ocuyuntaia arquata n. gen. n. sp." = Ocoyuntaia arquata2 Rusconi 1947 archosaur
Single tooth