Laguna Guatraché: Huayquerian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Cingulata - Panochthidae
Hoplophorus sp. Lund 1838
Romano et al. 2023
Mammalia - Cingulata
Coscinocercus sp. Cabrera 1939
Romano et al. 2023
Aspidocalyptus castroi Cabrera 1939
Romano et al. 2023
Mammalia - Cingulata - Dasypodidae
Doellotatus inornatus (Rovereto 1914)
Urrutia et al. 2008
Chasicotatus ameghinoi Scillato-Yané 1977
Urrutia et al. 2008
Proeuphractus sp. Ameghino 1886
Macroeuphractus morenoi (Lydekker 1894)
Mammalia - Notoungulata
Paedotherium minor Cabrera 1937
Sostillo et al. 2021
Mammalia - Notoungulata - Mesotheriidae
Pseudotypotherium subinsigne Rovereto 1914
Sostillo et al. 2021
GHUNLPam 19062
Mammalia - Notoungulata - Toxodontidae
cf. Stenotephanos plicidens (Ameghino 1885)
Sostillo et al. 2021
    = Stenotephanos plicidens Ameghino 1885
Romano et al. 2023
Mammalia - Panameriungulata - Macraucheniidae
Scalabrinitherium bravardi Ameghino 1883
Romano et al. 2023
GHUNLPam 5138, left partial maxilla with M1 (incomplete)-M3, and GHUNLPam 5139, right trigonid of a lower molar,
Mammalia - Rodentia - Hydrochoeridae
Cardiatherium aff. orientalis
Vucetich et al. 2014
Cardiatherium orientalis in older papers
    = Cardiatherium orientalis
Romano et al. 2023
Mammalia - Rodentia - Octodontidae
Metacaremys dimi n. sp. Piñero et al. 2021
Piñero et al. 2021
Holotype: MMH-GUA 20-01, and GHUNLPam 8323, MMH-GUA 20-02
Mammalia - Rodentia - Dinomyidae
Diaphoromys gamayensis Kraglievich 1931
Sostillo et al. 2022
GHUNLPam 5133, right hemimandible with p4–m3
Reptilia - Theropoda - Phorusrhacidae
Phorusrhacidae indet. (Ameghino 1889)
Cenizo et al. 2012
GHUNLPam 6325, shaft and distal end of left tibiotarsus
see common names

Geography
Country:Argentina State/province:La Pampa County:Chical
Coordinates: 37.7° South, 63.5° West (view map)
Paleocoordinates:37.9° South, 61.2° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period: Neogene
10 m.y. bin: Cenozoic 6
Key time interval: Huayquerian
Age range of interval: 7.9 - 4.9 m.y. ago
Age estimate: 7.560 to 6.904 Ma (other)
Stratigraphy
Formation:Cerro Azul
Stratigraphic resolution:formation
Stratigraphy comments: The Cerro Azul Formation is referrecl to the Huayquerian (Late Miocene) based on the presence of severa! groups of fossil mammals.

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). 7.154 Ma (6.904 - 7.560 Ma) for Guatreché.
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: Esteban, et al. 2000: Todos los ejemplares analizados están depositados en
la Cátedra de Geología Histórica de la Facultad de Ciencias Exactas y Naturales de la Universidad Nacional ele La Pampa, Argentina, cuyo acrónimo es GHUNLPam
Metadata
Database number:204361
Authorizer:P. Mannion, J. Carrillo Enterer:M. Kouvari, K. Pino, G. Varnham
Modifier:G. Varnham
Created:2019-09-06 10:22:45 Last modified:2023-12-21 10:58:02
Access level:the public Released:2019-09-06 10:22:45
Creative Commons license:CC BY
Reference information

Primary reference:
70059. G. I. Esteban, N. L. Nasif, and C. I. Montalvo. 2000. Nuevos registros de Dasypodidae (Xenarthra) del Mioceno tardío de la provincia de La Pampa, Argentina. Revista Espanola de Paleontología 16(1):77-87 [P. Mannion/M. Kouvari]

Secondary references:

72948 M. M. Cenizo, C. P. Tambussi, and C. I. Montalvo. 2012. Late Miocene continental birds from the Cerro Azul Formation in the Pampean region (central- southern Argentina). Alcheringa: An Australasian Journal of Palaeontology 36(1):47-68 [P. Mannion/G. Varnham]
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]
86911 G. I. Schmidt, C. I. Montalvo, E. Cerdeño, R. Sostillo, R. L. Tomassini and R. A. Bonini. 2022. Updated data on Litopterna from the Huayquerian Stage/Age (Late Miocene-Early Pliocene) of central-east Argentina. Comptes Rendus Palevol 21(32):721-743 [P. Mannion/G. Varnham/P. Mannion]
85304 R. Sostillo, M. C. Cardonatto, L. Kerber and C. I. Moltalvo. 2022. Taxonomic and ontogenetic diversity of Dinomyidae (Rodentia) from the late Miocene-early Pliocene of La Pampa province (Argentina) based on cranio-dental remains. Journal of South American Earth Sciences 114:103704 [J. Carrillo/K. Pino/P. Mannion]
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]
70761 M. G. Vucetich, C. M. Deschamps, E. C. Vieytes and C. I. Montalvo. 2014. Late Miocene Capybaras from Argentina: Skull Anatomy, Taxonomy, Evolution, and Biochronology. Acta Palaeontologica Polonica 59(3):517-535 [P. Mannion/M. Kouvari/M. Kouvari]