Río Gallegos: Santacrucian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Anseriformes
Brontornis burmeisteri Moreno and Mercerat 1891
Alvarenga and Holfing 2003
Mammalia - Cingulata - Chlamyphoridae
Prozaedyus exilis Ameghino 1887
Vizcaíno et al. 2012
YPM-VPPU 15579, skull and postskeleton
Mammalia
Adiastaltus habilis Ameghino 1893
McDonald et al. 2008 1 specimen
MACN A-5801, distal humerus
Stegotherium tauberi Gonzalez and Scilalto-Yané 2008
Vizcaíno et al. 2012
YPM-VPPU 15565, skull, vertebrae, pes, carapace
Mammalia - Megatheriidae
Prepotherium potens Ameghino 1891
Bargo et al. 2012
YPM-VPPU 15345, postcrania ("Killik Aike")
Mammalia
Hapalops rectangularis n. sp. Ameghino 1887
Bargo et al. 2012
recombined as Schismotherium rectangularis
AMNH 9222, mandible and postcrania, holotype
Mammalia - Megalonychidae
Megalonychidae indet. Gervais 1855
Bargo et al. 2012
AMNH 94754, postcrania ("Río Gallegos")
Hapalops sp. Ameghino 1887
Bargo et al. 2012
YPM-VPPU 15618, postcrania ("Killik Aike")
Hapalops elongatus Ameghino 1891
Bargo et al. 2012
YPM-VPPU 15597, skull and mandible ("Killik Aike")
Mammalia - Astrapotheria - Astrapotheriidae
Astrapotherium magnum (Owen 1853)
Cassini et al. 2012
AMNH 9278, cranium and mandible
Mammalia - Notoungulata - Interatheriidae
Protypotherium cavum
Quiroga 1988
AMNH 9245. endocraneum studied also by Simpson 1933 and Radinsky 1981
Protypotherium attenuatum Ameghino 1887
Cassini et al. 2012
synonym of Protypotherium praerutilum
YPM-VPPU 15341, postcrania; 15665, cranium ("Killik Aike, Río Gallegos")
Protypotherium australe (Moreno 1882)
Cassini et al. 2012
AMNH 9565, cranium and mandible ("Río Gallegos"); YPM-VPPU 15340, femur, tibia; 15659, femur, tibia; 15828, cranium, mandible, humerus, ulna; 15892, humerus ("Killik Aike, Río Gallegos")
Interatherium robustum Ameghino 1891
Cassini et al. 2012
synonym of Interatherium extensus
AMNH 9483, mandible
Mammalia - Notoungulata
Hegetotherium mirabile Ameghino 1887
Cassini et al. 2012
YPM-VPPU 15431, femur, tibia; 15542, cranium, mandible, humerus, ulna ("Killik AIke, Río Gallegos")
Pachyrukhos moyani Ameghino 1885
Cassini et al. 2012
YPM-VPPU 15743, cranium; 15744, cranium, mandible ("Killik Aike, Río Galllegos")
Mammalia - Notoungulata - Toxodontidae
Adinotherium ovinum (Owen 1846)
Cassini et al. 2012
AMNH 9571, cranium
Nesodon sp. Owen 1846
Cassini et al. 2012
AMNH 9168, cranium, mandible; 9553, ulna, tibia ("Río Gallegos")
Mammalia - Panameriungulata - Proterotheriidae
Thoatherium minusculum Ameghino 1887
MacPhee et al. 2021
YPM PU 15721
Anisolophus australis (Burmeister 1879)
Cassini et al. 2012
recombined as Proterotherium australe
YPM-VPPU 15368, cranium ("Killik Aike, Río Gallegos")
Tetramerorhinus sp. Ameghino 1894
MacPhee et al. 2021
YPM PU 15368
Tetramerorhinus lucarius Ameghino 1894
Cassini et al. 2012
YPM-VPPU 15722, mandible ("Killik Aike, Río Gallegos")
Tetramerorhinus cingulatum Ameghino 1891
Cassini et al. 2012
YPM-VPPU 15436, mandible ("Killik Aike, Río Gallegos"); 15732, mandible ("Río Gallegos")
Mammalia - Rodentia - Acaremyidae
Acaremys major n. sp. Scott 1905
Arnal and Vucetich 2015 1 specimen
YPM PU15366, skull ("Killik-Aike")
Pseudoacaremys kramarzi Arnal and Vucetich 2015
Arnal and Vucetich 2015 1 specimen
YPM PU 15872, maxillaries ("Killik-Aike")
Mammalia - Primates - Homunculidae
Homunculus patagonicus Ameghino 1891
Perry et al. 2014
The holotype of H. patagonicus (MACN-A 634) was collected by Carlos Ameghino from the north shore of the estuary of the Rio Gallegos but got lost.
Mammalia - Sparassodonta
Cladosictis patagonica Ameghino 1887
Marshall 1981 1 specimen
MACN 705, left maxillary P3-M2, isolated ?P2, C fragments ("Río Gallegos")
Sipalocyon gracilis Ameghino 1887
Prevosti et al. 2012
YPM-VPPU 153737 ("Killik Aike")
Mammalia - Microbiotheria - Microbiotheriidae
Microbiotherium tehuelchum Ameghino 1887
Abello et al. 2012
coll. H. Felton ("Killik-Aike")
Mammalia - Paucituberculata - Palaeothentidae
Palaeothentes intermedius Ameghino 1887
Bown and Fleagle 1993
Palaeothentes aratae Moreno 1882
Abello et al. 2012
coll. B. Brown
Palaeothentes minutus Ameghino 1887
Abello et al. 2012
coll. B. Brown ("Río Gallegos"), H. Felton ("Killik-Aike"): MACn-A 5619-5639a-I, dentaries and postcrania
Acdestis oweni Ameghino 1887
Bown and Fleagle 1993
see common names

Geography
Country:Argentina State/province:Santa Cruz
Coordinates: 51.6° South, 69.4° West (view map)
Paleocoordinates:52.2° South, 63.7° West
Basis of coordinate:stated in text
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:17.40000 - 16.20000 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
Metadata
Also known as:Killik Aike, Río Gallegos
Database number:176590
Authorizer:J. Zijlstra, P. Mannion Enterer:J. Zijlstra, M. Kouvari, G. Varnham
Research group:vertebrate
Subset of collection #:27313
Created:2016-02-17 22:36:28 Last modified:2016-02-17 22:36:28
Access level:the public Released:2016-02-17 22:36:28
Creative Commons license:CC BY
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]
58126 M. Arnal and M. Vucetich. 2015. Revision of the fossil rodent Acaremys Ameghino, 1887 (Hystricognathi, Octodontoidea, Acaremyidae) from the Miocene of Patagonia (Argentina) and the description of a new acaremyid. Historical Biology 27(1):42-59 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
58223 M. S. Bargo, N. Toledo, and S. F. Vizcaíno. 2012. Paleobiology of the Santacrucian sloths and anteaters (Xenarthra, Pilosa). In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 216-242 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
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]
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]
81723 R. D. E. MacPhee, S. Hernández del Pino, A. Kramarz, A. M. Forasiepi, M. Bond and R. B. Sulser. 2021. Cranial morphology and phylogenetic relationships of Trigonostylops wortmani, an Eocene South American native ungulate. Bulletin of the American Museum of Natural History 449(1):1-183 [P. Mannion/G. Varnham]
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]
58233 H. G. McDonald, S. F. Vizcaíno, and M. S. Bargo. 2008. Skeletal anatomy and the fossil history of the Vermilingua. In S. F. Vizcaíno, W. J. Loughry (eds.), The Biology of the Xenarthra 64-78 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
58229 J. M. Perry, R. F. Kay, S. F. Vizcaíno and M. S. Bargo. 2014. Oldest known cranium of a juvenile New World monkey (Early Miocene, Patagonia, Argentina): Implications for the taxonomy and the molar eruption pattern of early platyrrhines. Journal of Human Evolution 74:67-81 [J. Zijlstra/J. Zijlstra/M. Kouvari]
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]
71024 J. C. Quiroga. 1988. Cuantificacion de la corteza cerebral en moldes endocraneanos de mamiferos girencefalos. Procedimiento y aplicacion en tres mamiferos extinguidos. Ameghiniana 25(1):67-84 [P. Mannion/M. Kouvari]
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]