Bajo Giuliani: Huayquerian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Cingulata
- Dasypodidae
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Chasicotatus ameghinoi
Scillato-Yané 1977
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Esteban et al. 2000 | |||||||||
Mammalia
- Cingulata
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Coscinocercus sp.
Cabrera 1939
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Romano et al. 2023 | |||||||||
Eosclerocalyptus sp.
Ameghino 1919
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Romano et al. 2023 | |||||||||
Aspidocalyptus castroi
Cabrera 1939
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Romano et al. 2023 | |||||||||
Mammalia
- Mylodontidae
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Proscelidodon gracillimus
Rovereto 1914
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Montalvo et al. 2020 | |||||||||
GHUNLPam 2418 and MLP 81-XI-1-1 | ||||||||||
Mammalia
- Notoungulata
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Hemihegetotherium achataleptum
Rovereto 1914
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Cerdeño and Montalvo 2002 | |||||||||
GhUNLPam 2231 | ||||||||||
Tremacyllus impressus
(Ameghino 1888)
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Sostillo et al. 2018 | |||||||||
GHUNLPam multiple specimens | ||||||||||
Paedotherium sp.
Burmeister 1888
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Cerdeño et al. 2017 | |||||||||
Paedotherium minor
Cabrera 1937
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Sostillo et al. 2021 | |||||||||
GHUNLPam 9749, 4318, multiple specimens | ||||||||||
Mammalia
- Notoungulata
- Mesotheriidae
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Pseudotypotherium sp.
Ameghino 1904
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Romano et al. 2023 | |||||||||
Mammalia
- Panameriungulata
- Proterotheriidae
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Proterotheriidae indet.
Ameghino 1887
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Schmidt et al. 2018 | |||||||||
Diplasiotherium pampa
Soria 2001
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Schmidt et al. 2018 | |||||||||
Neobrachytherium sp.
Soria 2001
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Schmidt et al. 2018 | |||||||||
Mammalia
- Rodentia
- Chinchillidae
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Lagostomus telenkechanum
Rasia and Candela 2017
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Montalvo et al. 2023 | |||||||||
GHUNLPam 2220, GHUNLPam 2262, GHUNLPam 3694, GHUNLPam 9582, GHUNLPam 12751, GHUNLPam 14584, GHUNLPam 14586. | ||||||||||
Lagostomus pretrichodactyla
(Rovereto 1914)
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Montalvo et al. 2023 | |||||||||
GHUNLPam 415, GHUNLPam 657, GHUNLPam 2137, GHUNLPam 2192, GHUNLPam 2213, GHUNLPam 2241, GHUNLPam 5123, GHUNLPam 5452, GHUNLPam 8067, GHUNLPam 8071, GHUNLPam 12944, GHUNLPam 18990. | ||||||||||
Mammalia
- Rodentia
- Caviidae
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Palaeocavia sp.
Ameghino 1889
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Romano et al. 2023 | |||||||||
Dolicavia sp.
Ameghino 1916
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Romano et al. 2023 | |||||||||
Mammalia
- Rodentia
- Echimyidae
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Pampamys emmonsae n. sp.
Verzi et al. 1995
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Verzi et al. 1995 | |||||||||
GHUNLPam 2214 (type) | ||||||||||
Mammalia
- Rodentia
- Abrocomidae
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Protabrocoma antiqua
Rovereto 1914
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Romano et al. 2023 | |||||||||
Mammalia
- Rodentia
- Octodontidae
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Palaeoctodon aff. simplicidens
Rovereto 1914
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(6 measurements) | ||||||||||
Phtoramys sp.
Ameghino 1887
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Romano et al. 2023 | |||||||||
Metacaremys calfucalel
Piñero et al. 2021
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Piñero et al. 2021 | |||||||||
GHUNLPam 2338, 2363, 8547, 27058 | ||||||||||
Mammalia
- Rodentia
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Chasichimys sp.
Pascual 1967
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Verzi 1999 | |||||||||
GHUNLPam 2217 | ||||||||||
Mammalia
- Paucituberculata
- Caenolestidae
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Pliolestes venetus n. sp.
Goin et al. 2000
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Goin et al. 2000 | |||||||||
Mammalia
- Didelphimorphia
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Thylamys pinei n. sp.
Goin et al. 2000
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Goin et al. 2000 | |||||||||
(10 measurements) | ||||||||||
Zygolestes tatei n. sp.
Goin et al. 2000
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Goin et al. 2000 | |||||||||
(12 measurements) | ||||||||||
Thylatheridium hudsoni
Goin and Montalvo 1988
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Goin et al. 2000 | |||||||||
Mammalia
- Argyrolagidae
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Microtragulus rusconii n. sp.
Goin et al. 2000
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Goin et al. 2000 | |||||||||
recombined as Argyrolagus rusconii | ||||||||||
Reptilia
- Theropoda
- Tinamidae
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Nothura sp.
Wagler 1827
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Cenizo et al. 2012 | |||||||||
GHUNLPam 8070/1, distal portion of left femur | ||||||||||
see common names |
Geography
Country: | Argentina | State/province: | La Pampa |
Coordinates: | 36.7° South, 64.3° West (view map) | ||
Paleocoordinates: | 36.9° South, 62.0° West | ||
Basis of coordinate: | estimated from map | ||
Altitude: | 165 meters | ||
Geographic resolution: | local area |
Time
Period: | Neogene | ||
10 m.y. bin: | Cenozoic 6 | ||
Key time interval: | Huayquerian | Mammal zone: | Huayquerian |
Age range of interval: | 7.90000 - 4.90000 m.y. ago | ||
Age estimate: | 7.541 to 6.811 Ma (other) |
Stratigraphy
Formation: | Cerro Azul | ||||
Stratigraphic resolution: | formation | ||||
Stratigraphy comments: Schmidt et al. 2018: Figure 2 illustrates the stratigraphic distribution of the locality giving a general age estimate of 6.0-6.6Ma
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). 7.071 Ma (6.811 - 7.541 Ma) for Bajo Giuliani. |
Lithology and environment
Primary lithology: | paleosol/pedogenic,concretionary,nodular,red or brown sandy siltstone |
Lithology description: Sostillo et al 2018: The Cerro Azul Formation deposits (Linares et al., 1980) are discontinuous along the whole occupied area in the provinces of La Pampa and Buenos Aires (Fig. 2). They are composed of silts, sandy silts and very thin silty sands, reddish and brown colored, with a homogeneous and com- pact general aspect, and frequent carbonate nodules and evidences of pedogenic processes (Folguera and Zárate, 2009). Visconti et al. (2010) interpreted them as eolian de- posits characterized by loessic materials, with a high per- centage of lithic fragments and volcaniclastic sediments. Detailed geological and stratigraphic descriptions of the Cerro Azul Formation are provided by Linares et al. (1980), Goin et al. (2000), Visconti et al. (2010), and Folguera and Zárate (2009) Bajo Giuliani are eolian depositions with paleosols. | |
Environment: | loess |
Geology comments: Schmidt et al. 2018: Deposits at Telen, Bajo Giuliani, El Guanaco and Caleufú were interpreted as loess-like deposits with immature palaeosols and little diagenetic alteration (Montalvo et al., 2008, 2016; Verzi et al., 2008). |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | taxonomic analysis |
Collection method comments: Departamento de Ciencias Naturales, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa
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: | 140925 | ||
Authorizer: | C. Jaramillo, J. Carrillo, P. Mannion | Enterer: | J. Carrillo, G. Varnham, P. Mannion, M. Kouvari, K. Pino |
Modifier: | K. Pino | Research group: | vertebrate |
Created: | 2013-03-19 06:25:49 | Last modified: | 2023-08-15 04:50:07 |
Access level: | the public | Released: | 2013-03-19 06:25:49 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
45739. | C. I. Montalvo and S. Casadio. 1988. Presencia del género Paleoctodon (Rodentia, Octodontidae) en el Huayqueriense (Mioceno tardío) de la Provincia de La Pampa. Ameghiniana 25(2):111-114 [C. Jaramillo/J. Carrillo] |
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] | |
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] | |
70179 | E. Cerdeño, C. I. Montalvo, and R. Sostillo. 2017. Deciduous dentition and eruption pattern in late Miocene Pachyrukhinae (Hegetotheriidae, Notoungulata) from La Pampa Province, Argentina. Historical Biology 29(3):359-375 [P. Mannion/M. Kouvari] | |
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] | |
48408 | F. J. Goin, C. I. Montalvo, and G. Visconti. 2000. Los marsupiales (Mammalia) del Mioceno Superior de la Formacion Cerro Azul(Provincia de La Pampa, Argentina). Estudios Geol 56:101-126 [C. Jaramillo/J. Carrillo/J. Carrillo] | |
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] | |
69166 | G. I. Schmidt, C. I. Montalvo, R. Sostillo and E. Cerdeño. 2018. Proterotheriidae (Mammalia, Litopterna) from the Cerro Azul Formation (late Miocene), La Pampa Province, Argentina. Journal of South American Earth Sciences 83:165-177 [P. Mannion/G. Varnham] | |
72326 | R. Sostillo, E. Cerdeno, and C. I. Montalvo. 2018. Taxonomic implications of a large sample of Tremacyllus (Hegetotheriidae: Pachyrukhinae) from the late Miocene Cerro Azul formation of La Pampa, Argentina. Ameghiniana 55(4):407-422 [P. Mannion/M. Kouvari] | |
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] | |
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] | |
69245 | D. H. Verzi, M. G. Vucetich, and C. I. Montalvo. 1995. Un nuevo Eumysopinae (Rodentia, Echimyidae) de Mioceno tardío de la Provincia de La Pampa y consideraciones sobre la historia de la subfamilia. Ameghiniana 32:191-195 [P. Mannion/G. Varnham] |