Barrancas Blancas (BB) - Estancia Aguada Grande (EAG 1): Santacrucian, Argentina
collected by C. Ameghino, Fernicola et al 2013-2014

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia - Temnospondyli - Calyptocephalellidae
Calyptocephalella cf. canqueli Schaeffer 1949
Muzzopappa 2019
Mammalia - Panameriungulata - Proterotheriidae
Anisolophus australis (Burmeister 1879)
Schmidt et al. 2019
recombined as Proterotherium australe
Diadiaphorus majusculus Ameghino 1887
Schmidt et al. 2019
Tetramerorhinus lucarius Ameghino 1894
Schmidt et al. 2019
Mammalia - Rodentia
Rodentia indet. Bowdich 1821
Caviomorpha indet. (Wood and Patterson 1955)
Mammalia - Rodentia - Neoepiblemidae
Perimys sp. Ameghino 1887
cf. Perimys sp. Ameghino 1887
Perimys/ Prolagostomus
Perimys erutus Ameghino 1887
Perimys incavatus Ameghino 1902
Mammalia - Rodentia - Dinomyidae
Scleromys sp. Ameghino 1887
cf. Scleromys sp. Ameghino 1887
Mammalia - Rodentia
Octodontoidea indet. Waterhouse 1839
Stichomys sp. Ameghino 1887
Mammalia - Rodentia - Acaremyidae
Acaremyidae indet. (Wood 1949)
Mammalia - Rodentia
Acarechimys minutissimus Ameghino 1887
Spaniomys sp. Ameghino 1877
Spaniomys riparius Ameghino 1887
Mammalia - Rodentia - Octodontidae
Sciamys sp. Ameghino 1887
Sciamys principalis Ameghino 1887
Mammalia - Rodentia
Steiromys sp. Ameghino 1887
Steiromys detentus Ameghino 1887
Steiromys duplicatus Ameghino 1887
Eocardia sp. Ameghino 1887
Eocardia cf. excavata Ameghino 1891
“Eocardia” excavata?
Eocardia montana Ameghino 1887
Mammalia - Rodentia - Eocardiidae
Phanomys sp. Ameghino 1887
cf. Phanomys sp. Ameghino 1887
Phanomys/ Eocardia
Phanomys mixtus Ameghino 1887
Mammalia - Rodentia
Neoreomys sp. Ameghino 1887
Neoreomys australis Ameghino 1887
Mammalia - Primates - Homunculidae
Homunculus vizcaino n. sp.
Kay and Perry 2019
Holotype: MPM-PV 19426
Mammalia - Astrapotheria - Astrapotheriidae
Astrapotherium sp. Burmeister 1879
Fernández and Muñoz 2019
Mammalia - Notoungulata - Toxodontidae
Adinotherium sp. Ameghino 1887
Fernández and Muñoz 2019
Mammalia - Notoungulata - Interatheriidae
Interatherium sp. Ameghino 1887
Fernández and Muñoz 2019
Protypotherium praerutilum Ameghino 1887
Fernández and Muñoz 2019
Protypotherium attenuatum Ameghino 1887
Fernández and Muñoz 2019
synonym of Protypotherium praerutilum
Mammalia - Paucituberculata - Palaeothentidae
Palaeothentes minutus Ameghino 1887
Chornogubsky et al. 2019
Palaeothentes intermedius Ameghino 1887
Chornogubsky et al. 2019
Palaeothentes lemoinei Ameghino 1887
Chornogubsky et al. 2019
Acdestis oweni Ameghino 1887
Chornogubsky et al. 2019
Mammalia - Paucituberculata - Abderitidae
Abderites meridionalis Ameghino 1887
Chornogubsky et al. 2019
Mammalia - Sparassodonta
Sipalocyon gracilis Ameghino 1887
Chornogubsky et al. 2019
Borhyaena tuberata Ameghino 1887
Chornogubsky et al. 2019
Reptilia - Gruiformes - Phorusrhacidae
Psilopterus sp. Moreno and Mercerat 1891
Diederle and Noriega 2019
MPM-PV 18901 and MPM-PV 18905
see common names

Geography
Country:Argentina State/province:Santa Cruz
Coordinates: 50.2° South, 69.7° West (view map)
Paleocoordinates:50.8° South, 64.1° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
Stage:Burdigalian 10 m.y. bin:Cenozoic 5
Key time interval:Santacrucian
Age range of interval:17.40000 - 16.20000 m.y. ago
Age estimate:17.21 to 16.3 Ma (Ar/Ar)
Stratigraphy
Formation:Santa Cruz
Stratigraphic resolution:formation
Stratigraphy comments: Arnal et al 2019: Barrancas Blancas (BB; 17.21–16.3 Ma), with two sites, Estancia Aguada Grande (EAG) and Estancia Santa Lucía (ESL)
Cuitino et al 2019 (focused on stratigraphy) tuff was dated in 17.04 ± 0.55 by means of U/Pb on zircons (Cuitiño et al., 2016), and it is used as a marker bed to correlate with Section EAG2 (Fig. 8)
This tuff was dated in 17.04 ± 0.55 by means of U/Pb on zircons (Cuitiño et al., 2016), and it is used as a marker bed to correlate with Section EAG2 (Fig. 8). In this part of the SCF no terrestrial fossil vertebrates were recovered
Lithology and environment
Primary lithology:lenticular,tabular,paleosol/pedogenic silty sandstone
Lithology description: Cuitino et al 2019: It is mostly com- posed of floodplain deposits of FAs 1 and 2.
Environment:"floodplain"
Geology comments: Floodplain deposits with paleosols, Sheet flood – crevasse splay deposits and Fluvial channel deposits
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Collectors:C. Ameghino, Fernicola et al Collection dates:2013-2014
Metadata
Database number:210786
Authorizer:P. Mannion Enterer:M. Kouvari
Modifier:M. Kouvari Research group:vertebrate
Subset of collection #:176593
Created:2020-06-19 07:23:27 Last modified:2020-06-22 08:59:34
Access level:the public Released:2020-06-19 07:23:27
Creative Commons license:CC BY
Reference information

Primary reference:
72783. M. Arnal, M. E. Perez, and C. M. Deschamps. 2019. Revision of the Miocene caviomorph rodents from the Río Santa Cruz (Argentinean Patagonia). In J. C. Fernicola, M. S. Bargo, S. F. Vizcaíno, R. F. Kay (eds.), Early–Middle Miocene Paleontology in the Río Santa Cruz, Southern Patagonia, Argentina. 130 years since Ameghino, 1887 19(2):193-229 [P. Mannion/M. Kouvari/M. Kouvari]

Secondary references:

72910 L. Chornogubsky, M. A. Abello, and G. D. Barmak. 2019. The Metatheria from the Río Santa Cruz (Santa Cruz Formation, Early-Middle Miocene, Argentina): History and new records. In J. C. Fernicola, M. S. Bargo, S. F. Vizcaíno, R. F. Kay (eds.), Early–Middle Miocene Paleontology in the Río Santa Cruz, Southern Patagonia, Argentina. 130 years since Ameghino, 1887 19(2):62-68 [P. Mannion/M. Kouvari]
72911 J. M. Diederle and J. I. Noriega. 2019. New records of birds from the Santa Cruz Formation (Early-Middle Miocene) at the Río Santa Cruz Valley, Patagonia, Argentina. In J. C. Fernicola, M. S. Bargo, S. F. Vizcaíno, R. F. Kay (eds.), Early–Middle Miocene Paleontology in the Río Santa Cruz, Southern Patagonia, Argentina. 130 years since Ameghino, 1887 19(2):55-61 [P. Mannion/M. Kouvari]
72896 M. Fernández and N. A. Muñoz. 2019. Notoungulata and Astrapotheria (Mammalia, Meridiungulata) of the Santa Cruz Formation (Early-Middle Miocene) Along the Río Santa Cruz, Argentine Patagonia. In J. C. Fernicola, M. S. Bargo, S. F. Vizcaíno, R. F. Kay (eds.), Early–Middle Miocene Paleontology in the Río Santa Cruz, Southern Patagonia, Argentina. 130 years since Ameghino, 1887 19(2):138-169 [P. Mannion/M. Kouvari]
72898 R. F. Kay and J. M. G. Perry. 2019. New Primates From the Río Santa Cruz and Río Bote (Early-Middle Miocene), Santa Cruz Province, Argentina. Publicación Electrónica de la Asociación Paleontológica Argentina 19(2):230-238 [P. Mannion/M. Kouvari/E. Vlachos]
72912 P. Muzzopappa. 2019. Calyptocephalella (Anura, Australobatrachia) remains from Río Santa Cruz (Early-Middle Miocene, Santa Cruz Formation), Santa Cruz Province, Argentina. In J. C. Fernicola, M. S. Bargo, S. F. Vizcaíno, R. F. Kay (eds.), Early–Middle Miocene Paleontology in the Río Santa Cruz, Southern Patagonia, Argentina. 130 years since Ameghino, 1887 19(2):48-54 [P. Mannion/M. Kouvari]
72897 G. I. Schmidt, S. Hernández Del Pino, N. Muñoz and M. Fernández. 2019. Litopterna (Mammalia) From the Santa Cruz Formation (Early-Middle Miocene) At the Río Santa Cruz, Southern Argentina. In J. C. Fernicola, M. S. Bargo, S. F. Vizcaíno, R. F. Kay (eds.), Early–Middle Miocene Paleontology in the Río Santa Cruz, Southern Patagonia, Argentina. 130 years since Ameghino, 1887 19(2):170-192 [P. Mannion/M. Kouvari]