Segundas Barrancas Blancas (SBB) - from Estancia Cordon Alto to Ea el Tordillo: Santacrucian, Argentina
collected by C. Ameghino, Fernicola et al 2013-2014

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Notoungulata - Interatheriidae
Protypotherium compressidens Ameghino 1891
Fernández et al. 2023
MPM-PV 19761, MPM-PV 19781, MPM-PV 19782
Interatherium sp. Ameghino 1887
Interatherium rodens Moreno 1882
Fernández et al. 2023
Interatherium extensus Fernández et al. 2023
Fernández et al. 2023
Mammalia - Notoungulata - Toxodontidae
Nesodon sp. Owen 1846
Mammalia - Rodentia
Neoreomys sp. Ameghino 1887
Mammalia - Rodentia - Neoepiblemidae
Perimys sp. Ameghino 1887
Mammalia - Cingulata
Peltephilus sp. Ameghino 1887
Fernicola and Vizcaino 2019
Peltephilus pumilus Ameghino 1887
Fernicola and Vizcaino 2019
Mammalia - Cingulata - Chlamyphoridae
Proeutatus sp. Ameghino 1891
Proeutatus oenophorus (Ameghino 1887)
Fernicola and Vizcaino 2019
recombined as Proeutatus oenophorum
Stenotatus sp. Ameghino 1891
Stenotatus patagonicus (Ameghino 1887)
Fernicola and Vizcaino 2019
Prozaedyus sp. (Ameghino 1891)
Prozaedyus proximus (Ameghino 1887)
Fernicola and Vizcaino 2019
Mammalia - Cingulata - Propalaehoplophoridae
Propalaehoplophoridae indet. Ameghino 1891
Fernicola and Vizcaino 2019
Eucinepeltus sp. (Ameghino 1891)
Fernicola and Vizcaino 2019
Cochlops sp. Ameghino 1889
Mammalia
Megatherioidea indet. Gray 1821
Bargo et al. 2019
Mammalia - Megatheriidae
Megatheriidae indet. (Gray 1821)
Bargo et al. 2019
misspelling Megatheriadae
Planopinae indet. Ameghino 1887
Bargo et al. 2019
Mammalia - Megalonychidae
Hapalops sp. Ameghino 1887
cf. Hapalops sp. Ameghino 1887
Bargo et al. 2019
Mammalia - Mylodontidae
cf. Nematheriinae indet. Mercerat 1891
Bargo et al. 2019
Nematheriinae? Planopinae?
see common names

Geography
Country:Argentina State/province:Santa Cruz
Coordinates: 50.3° South, 70.4° West (view map)
Paleocoordinates:50.9° South, 64.8° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
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:16.47 to 15.3 Ma (Ar/Ar)
Stratigraphy
Formation:Santa Cruz
Stratigraphic resolution:formation
Stratigraphy comments: Arnal et al 2019: Segundas Barrancas Blancas (SBB; 16.47–15.3 Ma), with three sites, Estancia Cordón Alto1 (ECA), Estancia Cordón Alto2 (ECA2), and Estancia el Tordillo (EET);
Lithology and environment
Primary lithology: not reported
Lithology description: "90 m of horizontal strata of tabular geometry, composed of greenish and yellow siltstones and tabular to lenticular beds of gray sandstones"
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Collectors:C. Ameghino, Fernicola et al Collection dates:2013-2014
Collection method comments: Recent fieldwork carried out between 2013 and 2014 by joint expeditions of the MLP, MACN, and Duke University
Metadata
Database number:176623
Authorizer:J. Zijlstra, P. Mannion, J. Carrillo Enterer:J. Zijlstra, K. Pino, M. Kouvari
Modifier:M. Kouvari Research group:vertebrate
Subset of collection #:176593
Created:2016-02-18 23:05:13 Last modified:2020-06-22 08:56:01
Access level:the public Released:2016-02-18 23:05:13
Creative Commons license:CC BY
Reference information

Primary reference:
58194. J. C. Fernicola, J. I. Cuitiño, S. F. Vizcaíno, M. S. Bargo, and R. F. Kay. 2014. Fossil localities of the Santa Cruz Formation (Early Miocene, Patagonia, Argentina) prospected by Carlos Ameghino in 1887 revisited and the location of the Notohippidian. Journal of South American Earth Sciences 52:94-107 [J. Zijlstra/J. Zijlstra/J. Zijlstra]

Secondary references:

72831 M. S. Bargo, G. De Iuliis, and N. Toledo. 2019. Early Miocene Sloths (Xenarthra, Folivora) From the Río Santa Cruz Valley (Southern Patagonia, Argentina), Ameghino, 1887 Revisited. 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):102-137 [P. Mannion/M. Kouvari]
84949 M. Fernández, J. C. Fernicola, and E. Cerdeño. 2023. Systematic Revision of Interatherium and Icochilus (Interatheriidae, Notoungulata) from the Santa Cruz Formation (Early To Middle Miocene), Santa Cruz Province, Argentina. Ameghiniana 60(3):236-258 [J. Carrillo/K. Pino]
85306 M. Fernández, J. C. Fernicola, and E. Cerdeño. 2023. Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early–Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae. Zoological Journal of the Linnean Society zlad043:1-28 [J. Carrillo/K. Pino]
72833 J. C. Fernicola and S. F. Vizcaino. 2019. Cingulates (Mammalia, Xenarthra) of the Santa Cruz Formation (Early-Middle Miocene) From 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):85-101 [P. Mannion/M. Kouvari]