Estancia Don Mariano: Huayquerian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Notoungulata
Paedotherium minor Cabrera 1937
Sostillo et al. 2021
Mammalia - Notoungulata - Mesotheriidae
Sostillo et al. 2021
GHUNLPam 12826, 313
Mammalia - Rodentia - Chinchillidae
Montalvo et al. 2023
GHUNLPam 5121 right maxilla with M1-3.
Mammalia - Rodentia - Echimyidae
Romano et al. 2023
Mammalia - Rodentia
Holotype: GHUNLPam 5040. It's Neophanomys biplicatus according to ref 70240
Mammalia - Rodentia - Abrocomidae
Protabrocoma antiqua Rovereto 1914
Romano et al. 2023
Mammalia - Rodentia - Octodontidae
Piñero et al. 2021
Holotype: GHUNLPam 5039
Mammalia - Cingulata - Dasypodidae
Urrutia et al. 2008
Romano et al. 2023
Urrutia et al. 2008
Urrutia et al. 2008
Macrochorobates scalabrinii (Moreno and Mercerat 1891)
Urrutia et al. 2008
Mammalia - Mylodontidae
Montalvo et al. 2020
GHUNLPam 5105
see common names

Geography
Country:Argentina State/province:La Pampa
Coordinates: 36.7° South, 64.3° West (view map)
Paleocoordinates:36.4° South, 62.6° West (Wright 2013)
Basis of coordinate:estimated from map
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: 7.534 to 6.564 Ma (other)
Stratigraphy
Formation:Cerro Azul
Stratigraphy comments: Romano et al. 2023: Biochronological methods were useful in ordering and estimating the age of the different faunas of the Cerro Azul Formation, ranging from ca. 8 to ca. 5.7 Ma. Some appear to be transitional between Chasicoan and “Huayquerian” faunas (Cerro La Bota, Cerro Patagua, and Algarrobo del Águila), and other three (Barrancas Coloradas, El Guanaco, and Caleufú) cover the latest Miocene, even some of them could have reached the earliest Pliocene. The Cerro Azul Formation localities cover the range between ca. 8 to ca. 5.7 Ma (late Tortonian–Messinian; Late Miocene; Fig. 3; Supplementary Online Information 1, Tab. S8). 7.088 Ma (6.564 - 7.534 Ma) for Don Mariano.
Lithology and environment
Primary lithology:massive,red sandy siltstone
Environment:terrestrial indet.
Geology comments: The Cerro Azul formation is composed of massive brown reddish sandy silts, with loessic
erosion
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:192135
Authorizer:C. Jaramillo, P. Mannion, J. Carrillo Enterer:J. Carrillo, P. Mannion, K. Pino, M. Kouvari
Modifier:K. Pino Research group:vertebrate
Created:2018-03-12 11:12:51 Last modified:2025-02-22 15:12:02
Access level:the public Released:2018-03-12 11:12:51
Creative Commons license:CC0
Reference information

Primary reference:
65000. D. H. Verzi, E. C. Vieytes, and C. I. Montalvo. 2011. Dental evolution in Neophanomys (Rodentia, Octodontidae) from the late Miocene of central Argentina. Geobios 44(6):621-633 [C. Jaramillo/J. Carrillo]

Secondary references:

73341 C. I. Montalvo, A. R. Miño-Boilini, R. Sostillo, E. Cerdeño, M. C. Cardonatto and R. A. Bonini. 2020. The Scelidotheriinae Proscelidodon gracillimus (Xenarthra: Mylodontidae) from the Cerro Azul Formation (late Miocene), Argentina: Ontogenetic variability and taxonomy. Journal of South American Earth Sciences 102754 [P. Mannion/P. Mannion]
85601 C. I. Montalvo, R. Sostillo, and L. L. Rasia. 2023. New light on the late Middle Miocene–Early Pliocene representatives of Lagostomus (Chinchillidae, Rodentia) from Cerro Azul Formation, Argentina. Journal of South American Earth Sciences 128(104481) [J. Carrillo/K. Pino]
85280 P. Piñero, D. H. Verzi, A. I. Olivares, C. I. Montalvo, R. L. Tomassini and A. Fernández Villoldo. 2021. Evolutionary pattern of Metacaremys gen. nov. (Rodentia, Octodontidae) and its biochronological implications for the late Miocene and early Pliocene of southern South America. Papers in Palaeontology 7(4):1859-1917 [J. Carrillo/K. Pino/P. Mannion]
85650 C. O. Romano, R. Bonini, S. Hemming, M. Cenizo, U. F. J. Pardiñas and F. J. Prevosti. 2023. Advances in the understanding of Neogene mammalian fauna in the Pampean region (central Argentina) through revising “biozone” hypotheses based on new dates and biochronological analyses. Ameghiniana 60(5):465-491 [J. Carrillo/K. Pino]
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]