Las Flores: Ypresian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Dipnoi - Ceratodontidae
Ceratodontidae indet. Gill 1872
Cione et al. 2011
MLP 90-II-5-990, a fragmentary upper tooth plate preserving the greater part of the first ridge and the whole second ridge. The biological wear was normal, and the material does not show any evidence of significant post-mortem abrasion.
Mammalia - Protodidelphidae
Protodidelphis sp. Paula Couto 1952
Oliveira and Goin 2011
Guggenheimia crocheti Oliveira and Goin 2011
Oliveira and Goin 2011
MLP 90-II-5-56
Mammalia - Sternbergiidae
Carolopaulacoutoia sp. McKenna and Bell 1997
Oliveira and Goin 2011
Didelphopsis sp. Paula Couto 1952
Oliveira and Goin 2011
Mammalia - Derorhynchidae
Derorhynchidae informal gen. nov. 1
Woodburne et al. 2014
Derorhynchidae informal gen. nov. 2
Woodburne et al. 2014
Derorhynchus sp. Couto 1952
Oliveira and Goin 2011
Mammalia - Didelphimorphia
Didelphimorphia informal gen. nov. 5
Woodburne et al. 2014
Mammalia - Paucituberculata
Bardalestes sp. Goin et al. 2009
MLP 90-II-5-336, an isolated upper molar (M?2; Fig. 2C, D) lacking the metastylar area; MLP 90-II-5-335, an isolated left protocone; MLP 90-II-5-337, an isolated right protocone; MLP 90-II-5-300 (Fig. 2E, F), an isolated right talonid.
Mammalia - Peradectidae
Peradectidae informal gen. nov. 3
Woodburne et al. 2014
Peradectidae informal gen. nov. 4
Woodburne et al. 2014
Mammalia
Procaroloameghinia pricei Marshall 1982
Oliveira and Goin 2011
Described and figured by Goin et al. (1998)
Mammalia - Microbiotheria - Microbiotheriidae
Mirandatherium sp. Paula Couto 1952
Oliveira and Goin 2011
Mammalia - Microbiotheria - Woodburnodontidae
Woodburnodon sp. Goin et al. 2007
Woodburne et al. 2014
Mammalia
Monodelphopsis sp. Paula Couto 1952
Oliveira and Goin 2011
Gashternia sp. Simpson 1935
Oliveira and Goin 2011
Bobbschaefferia sp. Paula Couto 1970
Oliveira and Goin 2011
Mammalia - Bonapartheriidae
Epidolops sp. Paula Couto 1952
Oliveira and Goin 2011
Mammalia - Polydolopidae
Polydolopidae informal gen. nov. 6
Woodburne et al. 2014
Pliodolops sp. Ameghino 1902
Woodburne et al. 2014
synonym of Polydolops
Mammalia - Sparassodonta
? Patene indet. Simpson 1935
Woodburne et al. 2014
Mammalia
Marmosopsis sp. Paula Couto 1962
Oliveira and Goin 2011
Mammalia - Panameriungulata - Didolodontidae
Ernestokokenia sp. Ameghino 1901
Oliveira and Goin 2011
Mammalia - Panameriungulata - Proterotheriidae
Anisolambda sp. Ameghino 1901
Woodburne et al. 2014
Mammalia - Panameriungulata - Macraucheniidae
Victorlemoineia sp. Ameghino 1901
MLP 90-II-5-336 (an isolated upper molar M?2; lacking the metastylar area), MLP 90-II-5-335 (an isolated left protocone), MLP 90-II-5-337 (an isolated right protocone) and MLP 90-II-5-300 (an isolated right talonid)
Mammalia - Panameriungulata - Protolipternidae
Asmithwoodwardia sp. Ameghino 1901
Oliveira and Goin 2011
Mammalia - Notoungulata - Isotemnidae
Isotemnus sp. Ameghino 1897
Woodburne et al. 2014
Mammalia - Notoungulata - Henricosborniidae
Peripantostylops sp. Ameghino 1904
Woodburne et al. 2014
Henricosbornia sp. Ameghino 1901
Oliveira and Goin 2011
Orome deepi Bauzá et al. 2019
Bauzá et al. 2019
Mammalia - Notoungulata - Oldfieldthomasiidae
Carmargomendesia sp. Paulo Couto 1978
Oliveira and Goin 2011
    = Camargomendesia sp. Paulo Couto 1978
Woodburne et al. 2014
Itaboraitherium sp. Paula Couto 1970
Oliveira and Goin 2011
Kibenikhoria sp. Simpson 1935
Woodburne et al. 2014
Colbertia sp. Paula Couto 1952
Oliveira and Goin 2011
Mammalia - Notoungulata
Antepithecus sp. Ameghino 1901
Reguero and Prevosti 2010
Mammalia - Astrapotheria - Trigonostylopidae
Trigonostylops sp. Ameghino 1897
Woodburne et al. 2014
Shecenia sp. Simpson 1935
Woodburne et al. 2014
nomen dubium belonging to Trigonostylopidae
Amphibia - Temnospondyli - Calyptocephalellidae
Gigantobatrachus casamiquelai Agnolin 2012
Agnolin 2012
see common names

Geography
Country:Argentina State/province:Chubut
Coordinates: 45.6° South, 69.1° West (view map)
Paleocoordinates:48.1° South, 59.1° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
Key time interval:Ypresian Mammal zone: Itaboraian
Age range of interval:56.00000 - 47.80000 m.y. ago
Stratigraphy
Geological group:Río Chico Formation:Las Flores
Stratigraphic resolution:group of beds
Stratigraphy comments: Originally correlated with Banco Negro Inferior levels (Marshall et al., 1981), the Las Flores Formation (Legarreta & Uliana, 1994) was later referred to the Río Chico Group (Legarreta & Uliana, 1994) and to the Kibenikhoria faunal zone (Bond et al., 1995).

Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Also known as:Southern Cliff of Colhué Huapi lake; Yacimiento Las Flores
Database number:133040
Authorizer:P. Mannion, J. Zijlstra Enterer:P. Mannion, G. Varnham, J. Zijlstra
Modifier:M. Kouvari Research group:vertebrate
Created:2012-08-31 19:56:58 Last modified:2020-09-18 07:47:33
Access level:the public Released:2012-08-31 19:56:58
Creative Commons license:CC BY
Reference information

Primary reference:
42837. F. J. Goin, A. M. Candela, M. A. Abello and E. V. Oliveira. 2009. Earliest South American paucituberculatans and their significance in the understanding of ‘pseudodiprotodont’ marsupial radiations. Zoological Journal of the Linnean Society 155:867-884 [P. Mannion/P. Mannion]

Secondary references:

73340 F. Agnolin. 2012. A new Calyptocephalellidae (Anura, Neobatrachia) from the Upper Cretaceous of Patagonia, Argentina, with comments on its systematic position. Studia Geologica Salmanticensia 48(2):129-178 [P. Mannion/P. Mannion]
69628 N. Bauzá, J. N. Gelfo, and G. M. López. 2019. Early steps in the radiation of notoungulate mammals in southern South America: A new henricosborniid from the Eocene of Patagonia. Acta Palaeontologica Polonica 64(3):597-603 [P. Mannion/G. Varnham/P. Mannion]
57763 A. L. Cione, S. Gouiric-Cavalli, J. N. Gelfo and F. J. Goin. 2011. The youngest non-lepidosirenid lungfish of South America (Dipnoi, latest Paleocene–earliest Eocene, Argentina). Alcheringa 35:193-198 [J. Zijlstra/J. Zijlstra]
42973 E. V. Oliveira and F. J. Goin. 2011. A reassessment of bunodont metatherians from the Paleogene of Itaborai (Brazil): Systematics and the age of the Itaborian SALMA. Revista Brasileira de Paleontologia 14(2):105-136 [P. Mannion/P. Mannion]
58079 M. A. Reguero and F. J. Prevosti. 2010. Rodent-like notoungulates (Typotheria) from Gran Barranca, Chubut Province, Argentina: phylogeny and systematics. In R. H. Madden, A. A. Carlini, M. G. Vucetich, R. F. Kay (eds.), The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia 148-165 [J. Zijlstra/J. Zijlstra]
57841 M. O. Woodburne, F. J. Goin, M. S. Raigemborn, M. Heizler, J. N. Gelfo and E. V. Oliveira. 2014. Revised timing of the South American early Paleogene land mammal ages. Journal of South American Earth Sciences 54:109-119 [J. Zijlstra/J. Zijlstra]