Portezuelo Sumich Norte, Pinturas Fm., Lago Buenos Aires: Burdigalian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Megalonychidae
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Hapalops sp.
Ameghino 1887
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Brandoni et al. 2016 | |||||||||
| MPM-PV 17409 | ||||||||||
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Mammalia
- Mylodontidae
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Nematherium sp.
Ameghino 1887
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Brandoni et al. 2019 | |||||||||
| MPM-PV 17422 | ||||||||||
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Mammalia
- Primates
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Platyrrhini indet.
Geoffroy 1812
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Novo and Fleagle 2015 | 1 specimen | ||||||||
| MACN-PV SC35, P2? | ||||||||||
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cf. Carlocebus carmenensis
Fleagle 1990
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Tejedor 2002 | |||||||||
| 2 specimens | ||||||||||
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Carlocebus carmenensis
Fleagle 1990
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Fleagle 1990 | |||||||||
| 7 specimens | ||||||||||
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Carlocebus intermedius n. sp.
Fleagle 1990
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Fleagle 1990 | |||||||||
| Holotype plus 1 specimen | ||||||||||
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Mammalia
- Primates
- Pitheciidae
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Pitheciidae indet.
Mivart 1865
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Novo et al. 2021 | |||||||||
| MPM PV 17414 | ||||||||||
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Mammalia
- Primates
- Homunculidae
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Soriacebus sp.
Fleagle et al. 1987
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Tejedor 2002 | |||||||||
| 2 specimens | ||||||||||
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Soriacebus cf. ameghinorum
Fleagle et al. 1987
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Tejedor 2005 | |||||||||
| 1 specimen | ||||||||||
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cf. Soriacebus ameghinorum
Fleagle et al. 1987
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Novo and Fleagle 2015 | 1 specimen | ||||||||
| MPM-PV 17395, right lower canine; MPM PV 17412, 17396, 17415 | ||||||||||
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Soriacebus ameghinorum
Fleagle et al. 1987
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Novo and Fleagle 2015 | 1 specimen | ||||||||
| MPM-PV 17394, maxilla P3-4; MPM PV 17413 | ||||||||||
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Mammalia
- Rodentia
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Acarechimys sp.
Patterson 1965
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Kramarz 2004 | |||||||||
| 1 specimen; probably a new species, but material is too fragmentary for definitive diagnosis | ||||||||||
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Acarechimys minutissimus
Ameghino 1887
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Arnal et al. 2017 | |||||||||
| MACN-PV SC2158 | ||||||||||
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Mammalia
- Rodentia
- Echimyidae
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Prostichomys bowni
Kramarz 2001
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Kramarz 2004 | |||||||||
| 31 specimens | ||||||||||
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Mammalia
- Rodentia
- Acaremyidae
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Galileomys eurygnathus
Kramarz 2004
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Kramarz 2004 | |||||||||
| 14 specimens | ||||||||||
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Mammalia
- Rodentia
- Dinomyidae
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Scleromys quadrangulatus
Kramarz 2006
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Kramarz 2006 | |||||||||
| 9 specimens | ||||||||||
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Mammalia
- Rodentia
- Neoepiblemidae
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Perimys intermedius
Kramarz 2002
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Kramarz 2002 | |||||||||
| 7 specimens | ||||||||||
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Mammalia
- Rodentia
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Luantus propheticus
Ameghino 1899
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Kramarz 2006 | |||||||||
| 13 specimens | ||||||||||
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Neoreomys pinturensis n. sp.
Kramarz 2006
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Kramarz 2006 | |||||||||
| (4 measurements) | ||||||||||
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Neoreomys australis
Ameghino 1887
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Kramarz 2006 | |||||||||
| 1 specimen | ||||||||||
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Steiromys principalis
Ameghino 1901
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Kramarz 2004 | |||||||||
| 1 specimen | ||||||||||
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Mammalia
- Rodentia
- Erethizontidae
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Branisamyopsis praesigmoides
Kramarz 2004
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Kramarz 2004 | |||||||||
| 4 specimens | ||||||||||
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Mammalia
- Rodentia
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Eosteiromys cf. homogenidens
Ameghino 1902
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Kramarz 2004 | |||||||||
| 2 specimens | ||||||||||
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Eosteiromys annectens
(Ameghino 1901)
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Kramarz 2004 | |||||||||
| 5 specimens | ||||||||||
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Mammalia
- Panameriungulata
- Proterotheriidae
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Picturotherium migueli
Kramarz and Bond 2005
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Kramarz and Bond 2005 | |||||||||
| 2 specimens | ||||||||||
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Lambdaconus lacerum
(Ameghino 1902)
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Kramarz and Bond 2005 | |||||||||
| 2 specimens | ||||||||||
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Tetramerorhinus fleaglei n. sp.
Kramarz and Bond 2005
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Kramarz and Bond 2005 | |||||||||
| holotype plus 10 specimens | ||||||||||
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Tetramerorhinus prosistens
(Ameghino 1899)
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Kramarz and Bond 2005 | |||||||||
| 8 specimens | ||||||||||
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Mammalia
- Paucituberculata
- Palaeothentidae
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Acdestis oweni
Ameghino 1887
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Bown and Fleagle 1993 | |||||||||
| MACN SC numbers 407, 408, 416, 451, 476, 500 | ||||||||||
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Mammalia
- Microbiotheria
- Microbiotheriidae
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Microbiotherium divisum
(Ameghino 1902)
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Chornogubsky and Kramarz 2012 | 1 specimen | ||||||||
| corrected as Oligobiotherium divisum | ||||||||||
| MACN Pv SC520, dentary m2-3 | ||||||||||
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Pachybiotherium illuminatum
Goin et al. 2010
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Barmak et al. 2021 | |||||||||
| MACN-PV SC3617b | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Santa Cruz | County: | Lago Buenos Aires |
| Coordinates: | 47.0° South, 70.6° West (view map) | ||||
| Paleocoordinates: | 47.7° South, 64.9° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Burdigalian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Burdigalian | Zone: | Pinturan |
| Age range of interval: | 20.44000 - 15.98000 m.y. ago | ||
| Age estimate: | 18 to 16 Ma (unknown) |
Stratigraphy
| Formation: | Pinturas | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Pertains to "Middle Sequence" = "Pinturan" of Kramarz & Bellosi 2005
Brandoni et al 2016: The absolute ages of ca. 17.99 Ma near the base of the Pinturas Formation at Estancia el Carmen (47? 120 44.6400S, 70? 340 9700W), and ca. 16.8 Ma in the Santa Cruz For- mation that overlies the Pinturas Formation at Portezuelo Sumich Norte (see Perkins et al. 2012 and Fleagle et al. 2012) (Fig. 1b) indicate that the lower and middle sequences from the Pinturas Formation would be similar in age to those from the coastal localities of the Santa Cruz Formation (‘‘typical Santacrucian fauna’’) with ages of ca. 18–16 Ma (Bown and Fleagle 1993; Fleagle et al. 1995; Tejedor et al. 2006; Perkins et al. 2012), and younger than those from the lower Fossil Zone of the Colhue-Huapi Member of the Sarmiento Formation (‘‘Colhuehuapian fauna’’) (Kramarz et al. 2010) with ages of ca. 20.4–20.0 Ma (Re´ et al. 2010) or 21.11–18.62 Ma (Dunn et al. 2013) (Fig. 2) Brandoni et al 2016: In the locality of Portezuelo Sumich Norte (46? 570 33.0900S, 70? 400 200W; Fig. 1a, b), numerous fossil remains (including primates) come from opposite sides of a badland ridge that probably preserves a part of the base of the middle sequence that has filled a scour cur into the top of the lower sequence (Bown and Larriestra 1990 fig. 9a; T. Bown, Pers. Com). There is an absolute age of ca. 16.8 Ma from a tuff of the Santa Cruz Formation that lies uncon- formably over the top of the Pinturas sequence (Bown and Larriestra 1990; Perkins et al. 2012; Fleagle et al. 2012); | |||||
Lithology and environment
| Primary lithology: | "volcaniclastic" |
| Includes fossils? | Y |
| Lithology description: Brandoni et al 2016: The Pinturas Formation is composed of up to 100 m of Miocene continental pyroclastic and eolian epiclastic sed-iments outcropping in the upper valley of the Pinturas River and its tributaries (Fig. 1a). It lies unconformably atop the Jurassic La Matilde Formation (Bahı´a Laura River and its tributaries (Fig. 1a). It lies unconformably atop the Jurassic La Matilde Formation (Bahı´a Laura Group), and is divided by two intraformational erosional unconformities into three sequences: (a) the lower sequence, dominated by pyroclastic mudrocks upon which very mature paleosols were formed; (b) the middle sequence, composed largely by epiclastic sand occurring as barchanoid paleodunes; and (c) the upper sequence, con-sisting of massive, poorly bedded pyroclastic mudrocks (Bown et al. 1988; Bown and Larriestra 1990). The Pin-turas Formation differs from the Santa Cruz Formation in the greater volume of pyroclastic materials, absence of marine intercalations, and the presence of mature paleosols in the lower sequence (Bown and Larriestra 1990). | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Associated major elements: | some |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
| Temporal resolution: | time-averaged |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | MACN |
Metadata
| Database number: | 59319 | ||
| Authorizer: | D. Croft, C. Jaramillo, J. Zijlstra, P. Mannion | Enterer: | D. Croft, P. Mannion, G. Varnham, J. Carrillo, M. Kouvari, J. Zijlstra |
| Modifier: | M. Kouvari | Research group: | vertebrate |
| Created: | 2006-03-26 07:57:00 | Last modified: | 2020-11-30 10:27:15 |
| Access level: | the public | Released: | 2006-03-26 07:57:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 16881. | T. M. Bown and C. N. Larriestra. 1990. Sedimentary paleoenvironments of fossil platyrrhine localities, Miocene Pinturas Formation, Santa Cruz Province, Argentina. Journal of Human Evolution 19(1-2):87-119 [D. Croft/D. Croft] |
Secondary references:
| 72683 | M. Arnal, M. G. Vucetich, D. A. Croft, M. S. Bargo, J. C. Fernícola and S. F. Viscaino. 2017. Systematic revision and evolutionary history of Acarechimys Patterson in Kraglievich 1965 (Rodentia, Caviomorpha, Octodontoidea). Ameghiniana 54(3):307-330 [P. Mannion/M. Kouvari] | |
| 73962 | G. Barmak, L. Chornogubsky, and L. C. Gaetano. 2021. New insights on Pachybiotherium illuminatum (Mammalia, Marsupialia, Microbiotheriidae) from the early Miocene of the Pinturas Formation (Santa Cruz Province, Argentina). Ameghiniana 58(1) [P. Mannion/P. Mannion/P. Mannion] | |
| 73037 | T. M. Bown and J. G. Fleagle. 1993. Systematics, Biostratigraphy, and Dental Evolution of the Palaeothentidae, Later Oligocene to Early-Middle Miocene (Deseadan-Santacrucian) Caenolestoid Marsupials of South America. Memoir (The Paleontological Society) 29:1-76 [P. Mannion/G. Varnham] | |
| 70242 | D. Brandoni, L. Gonzalez-Ruiz, M. F. Tejedon, G. Martin, and J. G. Fleagle. 2016. Megatherioidea (Mammalia, Xenarthra, Tardigrada) from the Pinturas Formation (Early Miocene), Santa Cruz Province (Argentina) and their chronological implications. Paläontologische Zeitschrift 90:619-628 [P. Mannion/M. Kouvari] | |
| 73350 | D. Brandoni, N. M. Novo, J. Tarquini and M. F. Tejedor. 2019. First record of Nematherium (Xenarthra, Mylodontidae) from the Pinturas Formation (Burdigalian, early Miocene), Santa Cruz Province, Argentina. Journal of South American Earth Sciences 96:102234:1-8 [P. Mannion/G. Varnham/P. Mannion] | |
| 58265 | L. Chornogubsky and A. G. Kramarz. 2012. Nuevos hallazgos de Microbiotheriidae (Mammalia, Marsupialia) en la Formación Pinturas (Mioceno temprano, Argentina). Ameghiniana 49(4):442-450 [J. Zijlstra/J. Zijlstra/J. Zijlstra] | |
| 46037 | J. G. Fleagle. 1990. New fossil platyrrhines from the Pinturas Formation, southern Argentina. Journal of Human Evolution 19(1-2):61-85 [C. Jaramillo/J. Carrillo/J. Zijlstra] | |
| 47126 | A. Kramarz. 2006. Neoreomys and Scleromys (Rodentia, Hystricognathi) from the Pinturas Formation, late Early Miocene of Patagonia, Argentina. Revista del Museo Argentina de Ciencias Naturales n.s 8(1):53-62 [C. Jaramillo/J. Carrillo] | |
| 16992 | A. G. Kramarz. 2002. Roedores chinchilloideos (Hystricognathi) de la Formación Pinturas, Mioceno temprano-medio de la provincia de Santa Cruz, Argentina. Revista del Museo Argentino de Ciencias Naturales, n.s. 4(2):167-180 [D. Croft/D. Croft] | |
| 16990 | A. G. Kramarz. 2004. Octodontoids and erethizontoids (Rodentia, Hystricognathi) from the Pinturas Formation, Early-Middle Miocene of Patagonia, Argentina. Ameghiniana 41(2):199-216 [D. Croft/D. Croft] | |
| 46083 | A. G. Kramarz. 2006. Eocardiids (Rodentia, Hystricognathi) from the Pinturas Formation, Late early Miocene of Patagonia, Argentina. Journal of Vertebrate Paleontology 26(3):770-778 [C. Jaramillo/J. Carrillo] | |
| 16665 | A. G. Kramarz and M. Bond. 2005. Los Litopterna (Mammalia) de la Formación Pinturas, Mioceno temprano-medio de Patagonia. Ameghiniana 42(3):611-626 [D. Croft/D. Croft] | |
| 58232 | N. M. Novo and J. G. Fleagle. 2015. New specimens of platyrrhine primates from Patagonia (Pinturas Formation, Early Miocene). Ameghiniana 52(3):367-372 [J. Zijlstra/J. Zijlstra] | |
| 86053 | N. M. Novo, M. F. Tejedor, L. R. González-Ruiz, J. G. Fleagle, D. Brandoni and M. Krause. 2021. Primate diversity in the early Miocene Pinturas Formation, southern Patagonia, Argentina. Anais da Academia Brasileira de Ciências 93(2):e20201218 [P. Mannion/P. Mannion] | |
| 45931 | M. F. Tejedor. 2002. Primate canines from the early Miocene Pinturas Formation, Southern Argentina. Journal of Human Evolution 43:127-141 [C. Jaramillo/J. Carrillo] | |
| 46033 | M. F. Tejedor. 2005. New Fossil Platyrrhine from Argentina. Folia Primatologica 76:146-150 [C. Jaramillo/J. Carrillo] |