Cerro Patagua: Huayquerian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Notoungulata
Cerdeño and Montalvo 2002
GHUNLPam 8045
    = Hemihegetotherium torresi Cabrera and Kraglievich 1931
Sostillo et al. 2021
GHUNLPam 8045
Paedotherium minor Cabrera 1937
Sostillo et al. 2021
Mammalia - Rodentia
GHUNLPam 8035
Mammalia - Cingulata - Dasypodidae
Proeuphractus sp. Ameghino 1886
Urrutia et al. 2008
Urrutia et al. 2008
Urrutia et al. 2008
see common names

Geography
Country:Argentina State/province:La Pampa
Coordinates: 37.1° South, 65.7° West (view map)
Paleocoordinates:36.6° South, 64.2° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Neogene
10 m.y. bin: Cenozoic 6
Key time interval: Huayquerian Mammal zone:  Huayquerian
Age range of interval: 8 - 5 m.y. ago
Age estimate: 8.328 to 7.664 Ma (other)
Stratigraphy
Formation:Cerro Azul
Stratigraphy comments: Romano et al. 2023: Between 9 and ca. 7.7 Ma, there is a transitional fauna, represented by the assemblages retrieved from Cerro Patagua, Cerro La Bota, and Algarrobo del Águila, with taxa already recorded in the Chasicoan fauna and the appearance of four taxa ca. 8 Ma that reach at least 7.3 Ma. These are “Orthomyctera”, Proeuphractus limpidus, Macrochorobates scalabrinii, and Tetrastylus laevigatus, possibly representing the first instances of the beginning of the “Huayquerian” fauna. We did not consider Cerro La Bota as part of the Chasicoan fauna but as representative of a transition between the Chasicoan fauna and the “Huayquerian” fauna, together with Cerro Patagua and Algarrobo del Águila (cf. Contreras et al., 2013).
Lithology and environment
Primary lithology:massive,black not reported
Environment:fluvial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Fragmentation:frequent
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:192166
Authorizer:C. Jaramillo, P. Mannion, J. Carrillo Enterer:J. Carrillo, M. Kouvari, G. Varnham, K. Pino
Modifier:K. Pino
Created:2018-03-14 09:59:27 Last modified:2025-02-22 15:12:02
Access level:the public Released:2018-03-14 09:59:27
Creative Commons license:CC0
Reference information

Primary reference:
65013. D. H. Verzi. 1999. The dental evidence on the differentiation of the ctenomyine rodents (Caviomorpha, Octodontidae, Ctenomyinae). Acta Theriologica 44(3):263-282 [C. Jaramillo/J. Carrillo]

Secondary references:

73117 E. Cerdeño and C. I. Montalvo. 2002. Los Hegetotheriinae (Hegetotheriidae, Notoungulata) del Mioceno superior de la provincia de La Pampa, Argentina. Revista del Museo Argentina de Ciencias Naturales 41(1):35-43 [P. Mannion/G. Varnham]
84590 R. Sostillo, C. I. Montalvo, E. Cerdeño, G. I. Schmidt, A. Folguera and M. C. Cardonatto. 2021. Updated knowledge on the Notoungulata (Mammalia) from the late Miocene Cerro Azul Formation, La Pampa Province, Argentina. Historical Biology An International Journal of Paleobiology 33(8):1247-1265 [J. Carrillo/K. Pino]
70799 J. J. Urrutia, C. I. Montalvo, and G. J. Scillato-Yane. 2008. Dasypodidae (Xenarthra, Cingulata) de la Formación Cerro Azul (Mioceno tardío) de la provincia de La Pampa, Argentina. Ameghiniana 45(2):289-302 [P. Mannion/M. Kouvari]