3 km south of Agrio del Medio: Aptian - Early Albian, Argentina
collected by L. Salgado et al. 2009–2011

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
3 individuals
adult (MOZ-Pv 1232); juvenile 1 (MOZ-Pv 1233, 1236–1247, 1250); juvenile 2 (MOZ-Pv 1248–1249, 1251–1258)
Canudo et al. 2016
Canudo et al. 2018
MOZ-Pv 1232 - holotype
see common names

Geography
Country:Argentina State/province:Neuquén County:Picunches
Coordinates: 38.4° South, 69.9° West (view map)
Paleocoordinates:34.6° South, 28.2° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Altitude:721 meters
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Early Cretaceous
Stage: Aptian - Albian 10 m.y. bin: Cretaceous 3 - Cretaceous 4
Key time interval: Aptian - Early Albian
Age range of interval: 121.4 - 110.1 m.y. ago
Stratigraphy
Geological group:Neuquén Formation:Rayoso Member:Pichi Neuquén
Stratigraphic resolution:bed
Stratigraphy comments: The fossiliferous layer corresponds to wacke sandstones of the Pichi Neuquén Member of the Rayoso Formation, Lower Cretaceous. The fossiliferous level with the dinosaur remains is located in the middle part of the Pichi Neuquén Member, 44.5 m from its base. Our own measurements taken at the locality itself give a total thickness of 604 m for this unit.

Regarding the age of the Pichi Neuquén Member, there is as yet no consensus. Musacchio and Vallati (2000) place the unit within the Aptian, whereas Leanza (2003) ascribes it to the early Albian.
Lithology and environment
Primary lithology:planar lamination,fine,red lithified wackestone
Secondary lithology:desiccation cracks,current ripples,burrows,bioturbation muddy sandstone
Includes fossils?Y
Lithology description: The fossil-bearing level comprises deposits of pale red color, thinly laminated fine-grained wacke [poorly sorted] sandstones, with the presence of slight bioturbation in the form of Skolithos-type and Planolites-type perforations, as well as desiccation cracks at the top. Fine, slightly muddy sandstones, characterized by the presence of climbing ripples, cover this level. Both levels exhibit tabular geometry of great continuity, providing smooth, clean contacts.
Environment:lacustrine indet.
Geology comments: More recently, Zavala et al. (2006) interpreted the levels of the psammitic units as deposits from sandy hyperpycnal flows, developed in shallow lacustrine bodies of variable salinity. This psammitic succession (hyperpycnites) would have originated during the expansion of the lacustrine system, whereas during its contraction the pelites and evaporites that make up the rest of the sequence would have been deposited (Zavala and Ponce, 2011).
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:medium
Fragmentation:none
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),mechanical,field collection
Reason for describing collection:paleoecologic analysis
Collectors:L. Salgado et al. Collection dates:2009–2011
Collection method comments: MOZ-Pv, Museo Provincial de Ciencias Naturales ‘Prof. Dr. Juan A. Olsacher’ (Zapala, Neuquén, Argentina), Paleovetebrates Collection. Collected as part of the Program of international cooperation between the ‘Prof. Dr. Juan A. Olsacher’ Natural Sciences Museum (Zapala, Neuquén, Argentina), the National University of Comahue (Neuquén, Argentina), and the University of Zaragoza (Spain)
Metadata
Database number:127363
Authorizer:R. Benson, M. Carrano, P. Mannion Enterer:R. Benson, P. Mannion, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2012-05-10 19:35:49 Last modified:2025-02-22 15:12:02
Access level:the public Released:2012-05-10 19:35:49
Creative Commons license:CC0
Reference information

Primary reference:
41456. L. Salgado, J. I. Canudo, A. C. Garrido and J. L. Carballido. 2012. Evidence of gregariousness in rebbachisaurids (Dinosauria, Sauropoda, Diplodocoidea) from the Early Cretaceous of Neuquén (Rayoso Formation), Patagonia, Argentina. Journal of Vertebrate Paleontology 32(3):603-613 [R. Benson/R. Benson]

Secondary references:

76429 J. I. Canudo, J. L. Carballido, A. Garrido and L. Salgado. 2016. A new rebbachisaurid sauropod from the Lower Cretaceous (Albian) of the Rayoso Formation (Neuquén, Argentina). In F. Torcida Fernández‐Baldor, J. I. Canudo, P. Huerta, & X. Pereda (eds.), VII Jornadas Internacionales sobre Paleontología de Dinosaurios y su Entorno, Libro de Resúmenes 43-45 [M. Carrano/M. Carrano/M. Carrano]
67253 J. I. Canudo, J. L. Carballido, A. Garrido and L. Salgado. 2018. A new rebbachisaurid sauropod from the Aptian–Albian, Lower Cretaceous Rayoso Formation, Neuquén, Argentina. Acta Palaeontologica Polonica 63(4):679-691 [P. Mannion/P. Mannion/P. Mannion]
47243 J. I. Canudo, L. Salgado, A. Garrido and J. Carballido. 2013. Primera evidencia de dinosaurios ornitópodos en la base de la Formación Huincul (Cenomaniense Superior-Turoniense, Cuenca Neuquina, Argentina) [First evidence of ornithopod dinosaurs at the base of the Huincul Formation (Cenomanian–upper Turonian, Neuquén Basin, Argentina)]. Geogaceta 53:9-12 [M. Carrano/M. Carrano/M. Carrano]
81287 J. I. Canudo, L. Salgado, J. Carballido and A. Garrido. 2013. Ten years digging up dinosaurs in Patagonia: the Ibero-Patagonian connection in the Mesozoic. In F. Torcida Fernández-Baldor & P. Huerta (ed.), VI Jornadas Internacionales sobre Paleontología de Dinosaurios y su Entorno. Libro de Resúmenes 19-20 [M. Carrano/M. Carrano]