Shehuén: Santacrucian, Argentina
collected by C. Ameghino

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Gruiformes - Phorusrhacidae
Phorusrhacos longissimus (Ameghino 1887)
Alvarenga and Holfing 2003
Mammalia - Sparassodonta
Acrocyon sectorius Ameghino 1887
Prevosti et al. 2012
MACN-A 9364-9385
Marshall 1981 1 specimen
MACN 681, dentary
Sipalocyon gracilis Ameghino 1887
Marshall 1981 1 specimen
MACN 648, dentary p3
Marshall 1981 13 specimens
MACN 691, left and right dentary with complete dentition; MACN 692, left maxillary and premaxillary with dentition; MACN 693–703, postcrania; all associated
Marshall 1981 1 specimen
MACN 5988, dentary m1-2, holotype
Mammalia - Microbiotheria - Microbiotheriidae
Marshall 1982 2 specimens
MACN 5719, dentary m4; MACN 5718, dentary m2-3 (both syntypes of _Halmarhiphus didelphoides_)
Mammalia - Paucituberculata - Caenolestidae
Marshall 1982 2 specimens
MACN 5708, dentary m3; 5717, dentary p3, m2-3
Marshall 1982 1 specimen
MACN 5706, dentary p3-m2
Mammalia - Paucituberculata - Pichipilidae
Marshall 1982 1 specimen
MACN 5707, dentary m2-4
Mammalia - Paucituberculata - Palaeothentidae
Acdestis oweni Ameghino 1887
Bown and Fleagle 1993
Abello et al. 2012
Abello et al. 2012
Abello et al. 2012
Mammalia - Paucituberculata - Abderitidae
Abello et al. 2012
MACN-A 5541, dentary p3-m4; PU 15079, dentary p3-m3
Mammalia - Cingulata
Vizcaíno et al. 2012
MACN-A 4891–4900, osteoderms
Vizcaíno et al. 2012
MACN-A 4902–4918, skull and osteoderms
Mammalia - Cingulata - Chlamyphoridae
Prozaedyus proximus (Ameghino 1887)
Vizcaíno et al. 2012
MACN-A 4865, partial carapace
Prozaedyus exilis Ameghino 1887
Vizcaíno et al. 2012
MACN-A 4814–4863, mandible, carapace fragment, postcrania
Mammalia - Rodentia - Chinchillidae
Prolagostomus sp. Ameghino 1887
Vizcaíno et al. 2021
see common names

Geography
Country:Argentina State/province:Santa Cruz
Coordinates: 48.5° South, 69.7° West (view map)
Paleocoordinates:47.9° South, 67.2° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period: Neogene Epoch: Miocene
Stage: Burdigalian 10 m.y. bin: Cenozoic 5
Key time interval: Santacrucian
Age range of interval: 17.5 - 16.3 m.y. ago
Stratigraphy
Formation:Santa Cruz
Stratigraphic resolution:formation
Lithology and environment
Primary lithology: not reported
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
Metadata
Also known as:Río Sehuén, Río Chalía
Database number:176594
Authorizer:J. Zijlstra, P. Mannion Enterer:J. Zijlstra, G. Varnham
Modifier:M. Kouvari Research group:vertebrate
Subset of collection #:27313
Created:2016-02-17 22:47:20 Last modified:2025-02-22 15:12:02
Access level:the public Released:2016-02-17 22:47:20
Creative Commons license:CC0
Reference information

Primary reference:
58167. S. F. Vizcaíno, R. F. Kay, and M. S. Bargo. 2012. Background for a paleoecological study of the Santa Cruz Formation (late Early Miocene) on the Atlantic Coast of Patagonia. In S. F. Vizcaí­no, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 1-22 [J. Zijlstra/J. Zijlstra/J. Zijlstra]

Secondary references:

58179 M. A. Abello, E. Ortiz-Jaureguizar, and A. M. Candela. 2012. Paleoecology of the Paucituberculata and Microbiotheria (Mammalia, Marsupialia) from the late Early Miocene of Argentina. In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 156-172 [J. Zijlstra/J. Zijlstra]
35669 H. M. F. Alvarenga and E. Holfing. 2003. Systematic revision of the Phorusrhacidae (Avies: Ralliformes). Papeis Avulsos de Zoologia 43(4):55-91 [M. Uhen/M. Uhen]
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]
57760 L. Marshall. 1982. Systematics of the South American marsupial family Microbiotheriidae. Fieldiana Geology 10:1-75 [J. Zijlstra/J. Zijlstra]
58306 L. G. Marshall. 1981. Review of the Hathlyacyninae, an extinct subfamily of South American "dog-like" marsupials. Fieldiana Geology 7:1-120 [J. Zijlstra/J. Zijlstra]
58202 F. J. Prevosti, A. M. Forasiepi, M. D. Ercoli and G. F. Turazzini. 2012. Paleoecology of the mammalian carnivores (Metatheria, Sparassodonta) of the Santa Cruz Formation (late Early Miocene). In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 173-193 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
86858 S. F. Vizcaíno, M. S. Bargo, R. F. Kay and M. S. Raigemborn. 2021. The record of the typothere Pachyrukhos (Mammalia, Notoungulata) and the Chinchillid Prolagostomus (Mammalia, Rodentia) in the Santa Cruz Formation (early–middle Miocene) south to the Río Coyle, Patagonia, Argentina. . Publicación Electrónica de la Asociación Paleontológica Argentina 21(2):1-15 [P. Mannion/G. Varnham]
58206 S. F. Vizcaíno, J. C. Fernicola, and M. S. Bargo. 2012. Paleobiology of Santacrucian glyptodonts and armadillos (Xenarthra, Cingulata). In S. F. Vizcaí­no, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 194-215 [J. Zijlstra/J. Zijlstra/J. Zijlstra]