Anfiteatro: Santacrucian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Tadigrada indet.
Mammalia - Sparassodonta
Borhyaena tuberata Ameghino 1887
Prevosti et al. 2012
MPM-PV 4324
Mammalia - Sparassodonta - Hathlyacynidae
Hathlyacynidae indet. (Ameghino 1894)
corrected as Hathlyacininae
small species
Mammalia - Sparassodonta
Cladosictis patagonicus
Cladosictis patagonica Ameghino 1887
Prevosti et al. 2012
MPM-PV 3645, 4326, 4325, 4327, 4329
Mammalia - Paucituberculata - Palaeothentidae
Acdestis owenii (Ameghino 1887)
Kay et al. 2012
original and current combination Acdestis oweni
Mammalia - Astrapotheria - Astrapotheriidae
Astrapotherium sp. Burmeister 1879
Astrapotherium magnum (Owen 1853)
Kay et al. 2012
Mammalia - Notoungulata
Hegetotherium sp. Ameghino 1887
Mammalia - Notoungulata - Interatheriidae
Interatherium sp. Ameghino 1887
Interatherium robustum Ameghino 1891
Cassini et al. 2012
synonym of Interatherium extensus
MPM-PV 3471, cranium, mandible, humerus; 3527, cranium, mandible, humerus, ulna, femur, tibia; 3528, mandible; 3539, tibia
Mammalia - Notoungulata - Toxodontidae
Adinotherium sp. Ameghino 1887
Adinotherium ovinum (Owen 1846)
Cassini et al. 2012
MPM-PV 3542, humerus, ulna, tibia
Nesodon sp. Owen 1846
Nesodon imbricatus Owen 1846
Mammalia - Cingulata
Peltephilus pumilus Ameghino 1887
Vizcaíno et al. 2012
MPM-PV 3433, skull and postcrania; MPM-PV 3643, skull and mandible
Peltephilus cf. pumilus Ameghino 1887
Mammalia - Cingulata - Propalaehoplophoridae
Propalaehoplophorus sp. Ameghino 1887
Cochlops muricatus Ameghino 1889
Vizcaíno et al. 2012
MPM-PV 3432, skull, carapace fragment
Mammalia - Cingulata - Chlamyphoridae
Proeutatus sp. Ameghino 1891
Proeutatus oenophorus (Ameghino 1887)
Vizcaíno et al. 2012
recombined as Proeutatus oenophorum
MPM-PV 3435, osteoderms
Mammalia - Rodentia
Neoreomys sp. Ameghino 1887
Neoreomys australis Ameghino 1887
Candela et al. 2012
MPM-PV 3513, skull, atlas, axis, proximal femur; 3515, skull and dentary; 3516, partial femur; 3517, dentary, astragalus, calcaneum; 3518, rostrum, pelvis, femur fragments and tibia; 3519, skull, dentaries, postcrania; 3520, dentary and humerus; 3521, skull fragment, postcrania; 3522, skull and femur; 3523, skull and proximal femur
Eocardia sp. Ameghino 1887
Mammalia - Rodentia - Octodontidae
Sciamys sp. Ameghino 1887
Kay et al. 2012
Mammalia - Rodentia
Spaniomys modestus Ameghino 1887
Mammalia - Primates - Homunculidae
cf. Homunculus sp. Ameghino 1891
Mammalia - Panameriungulata - Proterotheriidae
Diadiaphorus sp. Ameghino 1887
synonym of Proterotherium
Reptilia - Theropoda
Aves indet. Linnaeus 1758
Reptilia - Theropoda - Phorusrhacidae
Psilopterus lemoinei (Moreno and Mercerat 1891)
Degrange et al. 2012 1 specimen
MPM-PV 4240, left tibiotarsus
see common names

Geography
Country:Argentina State/province:Santa Cruz
Coordinates: 51.1° South, 69.1° West (view map)
Paleocoordinates:51.7° South, 63.4° 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
Stratigraphy
Formation:Santa Cruz
Stratigraphic resolution:group of beds
Stratigraphy comments: The new localities come from the lowest part of the
Santa Cruz Formation exposed on the Atlantic coast
Lithology and environment
Primary lithology:tuffaceous silty claystone
Includes fossils?Y
Lithology description: The fossil bed is a water-deposited tuffaceous silty clay. The bed varies in thickness up to a maximum of 2 m. When dry, its weathered surfaces are grayish-white to tan, but it is greenish-white in the unweathered state. Deposition must have been rapid, as a number of fossils were observed to extend up to 20 cm into the rock. Neither cross-bedding nor root casts are visible; the fossils lack obvious surface weathering at the time of deposition and often are found in a partially articulated state. It appears that this tuffa- ceous horizon was buried soon after deposition and before a paleosol could be established.
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Museum repositories:MLP
Metadata
Database number:176578
Authorizer:J. Zijlstra, P. Mannion Enterer:J. Zijlstra, M. Kouvari
Modifier:M. Kouvari Research group:vertebrate
Subset of collection #:27313
Created:2016-02-17 21:49:33 Last modified:2019-09-10 04:41:40
Access level:the public Released:2016-02-17 21:49:33
Creative Commons license:CC BY
Reference information

Primary reference:
70111. R. F. Kay, S.F. Vizcaino, M. S. Bargo, J. M. G. Perry, F. J. Prevosti and J. C. Fernicola. 2008. Two new fossil vertebrate localities in the Santa Cruz Formation (late early – early middle Miocene, Argentina), ~ 51° South latitude. Journal of South American Earth Sciences 25:187-195 [P. Mannion/M. Kouvari]

Secondary references:

58225 A. M. Candela, L. L. Rasia, and M. E. Pérez. 2012. Paleobiology of Santacrucian caviomorph rodents: a morphofunctional approach. In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 287-305 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
58224 G. H. Cassini, E. Cerdeño, A. L. Villafañe and N. A. Muñoz. 2012. Paleobiology of Santacrucian native ungulates (Meridiungulata: Astrapotheria, Litoptera and Notoungulata). In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 243-286 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
58178 F. J. Degrange, J. I. Noriega, and J. I. Areta. 2012. Diversity and paleobiology of the Santacrucian birds. In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 138-155 [J. Zijlstra/J. Zijlstra]
58227 R. F. Kay, S. F. Vizcaíno, and M. S. Bargo. 2012. A review of the paleoenvironment and paleoecology of the Miocene Santa Cruz Formation. In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 331-365 [J. Zijlstra/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]
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]
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]