Bajada Colorada locality (Cretaceous to of Argentina)

Also known as Route 237, Picún Leufu

Where: Neuquén, Argentina (39.8° S, 69.7° W: paleocoordinates 38.8° S, 32.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bajada Colorada Formation, Late/Upper Berriasian to Late/Upper Berriasian (145.0 - 132.9 Ma)

• Seismological, surface geological, and biostratigraphical

•studies confirm an Early Cretaceous age (late Berriasian–Valanginian) of this formation. The Bajada Colorada Formation is considered a continental red bed unit, which conformably overlies the marine Picún Leufú Formation (Tithonian–early Berriasian) and is unconformably covered by the marine Agrio Formation (late Valanginian–late Hauterivian)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; fine-grained, coarse, brown, green sandstone and fine-grained, coarse, brown, green conglomerate

• The unit is mostly dominated by a fluvial regime, and the paleoenviroment resembles braided river systems where well-preserved channels with cross stratification and paleosols are present.
• This unit is composed of red and greenish-brown, fine to coarse grained conglomerates and sandstones with well developed bands of light brown siltstones and reddish claystones.

Size class: macrofossils

Collection methods: quarrying, surface (float), surface (in situ), mechanical,

• MMCH collection (Museo Municipal "Ernesto Bachmann" Villa El Chocón, Neuquén)

Primary reference: P. A. Gallina, S. Apesteguia, A. Haluza and J. I. Canale. 2014. A diplodocid sauropod survivor from the Early Cretaceous of South America. PLoS One 9(5):e97128 [R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 156241: authorized by Roger Benson, entered by Roger Benson on 15.05.2014, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Dicraeosauridae
Bajadasaurus pronuspinax n. gen. n. sp.
Bajadasaurus pronuspinax n. gen. n. sp. Gallina et al. 2019 dicraeosaurid
"abundant remains of a dicraeosaurid sauropod"
 Saurischia - Diplodocidae
Leinkupal laticauda n. gen. n. sp.
Leinkupal laticauda n. gen. n. sp. Gallina et al. 2014 diplodocine
Holotype, MMCH-Pv 63-1 one anterior caudal vertebra; plus paratypes, two anterior cervical vertebrae (MMCH-Pv 63- 2/3), one posterior cervical vertebra (MMCH-Pv 63-4), one anterior dorsal vertebra (MMCH-Pv 63-5), one anterior caudal vertebra (MMCH-Pv 63-6) and two mid-caudal vertebrae (MMCH-Pv 63-7/8)
 Saurischia -
Tetanurae indet. Gauthier 1986 tetanuran
diverse record of theropods, represented mainly by teeth and some bones, including "basal tetanurans"
 Avetheropoda -
Deinonychosauria indet. Colbert and Russell 1969 coelurosaur
diverse record of theropods, represented mainly by teeth and some bones, including "possible deinonychosaurians"
 Saurischia -
Abelisauroidea indet. Bonaparte 1991 ceratosaur
diverse record of theropods, represented mainly by teeth and some bones, including "possible abelisauroids"