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Southern Cliff of lower Chubut River Valley, Gaiman Department, Chubut Province, Argentina

Lat/Long (Decimal)-43.2833,-65.4833
Co-ordinates Derivationbased on nearby landmark
Given LocationChubut, Argentina
Mindat.org Region (for given coordinates)Gaiman Department, Chubut Province, Argentina

Collections

CollectionReferenceStratigraphic NameCommentsLithologyAge
Southern Cliff of lower Chubut River Valley, near GaimanAlbino A. M. (1996)Sarmiento - TrelewJA: originally entered as early Miocene but Colhuehuapian according to Kay et al. 2008, who also state that the terrestrial fossils are from "just above the Bryn Gwyn Member"

Busker, et al. 2019: the base of the Trelew Member in La Cantera (see Bown and Fleagle, 1993; Kay et al., 2008; Kramarz, 1998)
mudstone21 - 17.5 Ma
Miocene
Gaiman (marine vertebrates)Simpson G. G. (1946)GaimanJA: marine fossils are from a single "marine bed" in an unnamed member of the Gaiman Formation that is Aquitanian and overlies the Trelew Member, which includes Colhuehuapian terrestrial vertebrates (Kay et al. 2008)sandstone23.03 - 20.44 Ma
Miocene
Pan de Azucar, GaimanMarshall L. G. (1982)Rio ChicoStratigraphic correlations of this locality are unclear. Tejedor et al. (2009: Am. Museum Novitates 3638) note that it shares taxa with the "Sapoan" SALMA/Paso del Sapo local fauna, but also taxa from the Itaboraian of Canadon Hondo. This suggests an Early to Middle Eocene date. sandstone55.8 - 37.2 Ma
Eocene

Recorded Fossils

Accepted NameHierarchyAge
Cayaoa bruneti
species
Animalia : Chordata : Aves : Anseriformes : Anatidae : Cayaoa : Cayaoa bruneti23.03 - 20.44 Ma
Miocene
Eretiscus tonnii
species
Animalia : Chordata : Aves : Sphenisciformes : Eretiscus : Eretiscus tonnii23.03 - 20.44 Ma
Miocene
Palaeospheniscus wimani
species
Animalia : Chordata : Aves : Sphenisciformes : Palaeospheniscus : Palaeospheniscus wimani23.03 - 20.44 Ma
Miocene
Paraptenodytes antarcticus
species
Animalia : Chordata : Reptilia : Dinosauria : Paraptenodytes : Paraptenodytes antarcticus23.03 - 20.44 Ma
Miocene
Phocidae
family
Animalia : Chordata : Mammalia : Carnivora : Phocidae23.03 - 20.44 Ma
Miocene
Proheptaconus patagonicus
species
Animalia : Chordata : Mammalia : Litopterna : Adianthidae : Proheptaconus : Proheptaconus patagonicus21 - 17.5 Ma
Miocene
Eomicrobiotherium mykerum
species
Animalia : Chordata : Mammalia : Microbiotheria : Microbiotheriidae : Eomicrobiotherium : Eomicrobiotherium mykerum21 - 17.5 Ma
Miocene
Henricosbornia minuta
species
Animalia : Chordata : Mammalia : Notoungulata : Henricosborniidae : Henricosbornia : Henricosbornia minuta55.8 - 37.2 Ma
Eocene
Isotemnus haugi
species
Animalia : Chordata : Mammalia : Notoungulata : Isotemnidae : Isotemnus : Isotemnus haugi55.8 - 37.2 Ma
Eocene
Notopithecidae
family
Animalia : Chordata : Mammalia : Notopithecidae55.8 - 37.2 Ma
Eocene
Patagonia peregrina
species
Animalia : Chordata : Mammalia : Paucituberculata : Patagoniidae : Patagonia : Patagonia peregrina21 - 17.5 Ma
Miocene
Argyrolagoidea
superfamily
Animalia : Chordata : Mammalia : Polydolopimorphia : Argyrolagoidea21 - 17.5 Ma
Miocene
Anargyrolagus primus
species
Animalia : Chordata : Mammalia : Paucituberculata : Argyrolagidae : Anargyrolagus : Anargyrolagus primus21 - 17.5 Ma
Miocene
Polydolops rothi
species
Animalia : Chordata : Mammalia : Paucituberculata : Polydolopidae : Polydolops : Polydolops rothi55.8 - 37.2 Ma
Eocene
Dolichocebus gaimanensis
species
Animalia : Chordata : Mammalia : Primates : Cebidae : Dolichocebus : Dolichocebus gaimanensis21 - 17.5 Ma
Miocene
Chinchilloidea
superfamily
Animalia : Chordata : Mammalia : Rodentia : Chinchilloidea21 - 17.5 Ma
Miocene
Octodontoidea
superfamily
Animalia : Chordata : Mammalia : Rodentia : Octodontoidea21 - 17.5 Ma
Miocene
Acaremys preminutus
species
Animalia : Chordata : Mammalia : Rodentia : Octodontidae : Acaremys : Acaremys preminutus21 - 17.5 Ma
Miocene
Galileomys antelucanus
species
Animalia : Chordata : Mammalia : Rodentia : Acaremyidae : Galileomys : Galileomys antelucanus21 - 17.5 Ma
Miocene
Cephalomyidae
family
Animalia : Chordata : Mammalia : Rodentia : Cephalomyidae21 - 17.5 Ma
Miocene
Cephalomyopsis hipselodontus
species
Animalia : Chordata : Mammalia : Rodentia : Dasyproctidae : Cephalomyopsis : Cephalomyopsis hipselodontus21 - 17.5 Ma
Miocene
Soriamys gaimanensis
species
Animalia : Chordata : Mammalia : Rodentia : Cephalomyidae : Soriamys : Soriamys gaimanensis21 - 17.5 Ma
Miocene
Eoviscaccia australis
species
Animalia : Chordata : Mammalia : Rodentia : Chinchillidae : Eoviscaccia : Eoviscaccia australis21 - 17.5 Ma
Miocene
Australoprocta fleaglei
species
Animalia : Chordata : Mammalia : Rodentia : Dasyproctidae : Australoprocta : Australoprocta fleaglei21 - 17.5 Ma
Miocene
Gaimanomys alwinea
21 - 17.5 Ma
Miocene
Luantus sp.
genus
Animalia : Chordata : Mammalia : Rodentia : Eocardiidae : Luantus21 - 17.5 Ma
Miocene
Perimys incavatus
species
Animalia : Chordata : Mammalia : Rodentia : Neoepiblemidae : Perimys : Perimys incavatus21 - 17.5 Ma
Miocene
Perimys transversus
species
Animalia : Chordata : Mammalia : Rodentia : Neoepiblemidae : Perimys : Perimys transversus21 - 17.5 Ma
Miocene
Acarechimys minutissimus
species
Animalia : Chordata : Mammalia : Rodentia : Echimyidae : Acarechimys : Acarechimys minutissimus21 - 17.5 Ma
Miocene
Caviocricetus lucasi
species
Animalia : Chordata : Mammalia : Rodentia : Echimyidae : Caviocricetus : Caviocricetus lucasi21 - 17.5 Ma
Miocene
Dudumus ruigomezi
species
Animalia : Chordata : Mammalia : Rodentia : Dudumus : Dudumus ruigomezi21 - 17.5 Ma
Miocene
Eosteiromys sp.
genus
Animalia : Chordata : Mammalia : Rodentia : Erethizontidae : Eosteiromys21 - 17.5 Ma
Miocene
Eosteiromys homogenidens
species
Animalia : Chordata : Mammalia : Rodentia : Erethizontidae : Eosteiromys : Eosteiromys homogenidens21 - 17.5 Ma
Miocene
Eosteiromys segregatus
species
Animalia : Chordata : Mammalia : Rodentia : Erethizontidae : Eosteiromys : Eosteiromys segregatus21 - 17.5 Ma
Miocene
Prospaniomys sp.
genus
Animalia : Chordata : Mammalia : Rodentia : Echimyidae : Prospaniomys21 - 17.5 Ma
Miocene
Prospaniomys priscus
species
Animalia : Chordata : Mammalia : Rodentia : Echimyidae : Prospaniomys : Prospaniomys priscus21 - 17.5 Ma
Miocene
Protadelphomys latus
species
Animalia : Chordata : Mammalia : Rodentia : Echimyidae : Protadelphomys : Protadelphomys latus21 - 17.5 Ma
Miocene
Saremmys ligcura
species
Animalia : Chordata : Mammalia : Rodentia : Saremmys : Saremmys ligcura21 - 17.5 Ma
Miocene
Boidae
family
Animalia : Chordata : Reptilia : Squamata : Boidae21 - 17.5 Ma
Miocene
Gaimanophis tenuis
species
Animalia : Chordata : Reptilia : Squamata : Erycidae : Gaimanophis : Gaimanophis tenuis21 - 17.5 Ma
Miocene
Waincophis sp.
genus
Animalia : Chordata : Reptilia : Squamata : Boidae : Waincophis21 - 17.5 Ma
Miocene
Colubridae
family
Animalia : Chordata : Reptilia : Squamata : Colubridae21 - 17.5 Ma
Miocene
Chelidae
family
Animalia : Chordata : Reptilia : Testudines : Chelidae55.8 - 37.2 Ma
Eocene
Chelonoidis gringorum
species
Animalia : Chordata : Reptilia : Testudines : Testudinidae : Chelonoidis : Chelonoidis gringorum21 - 17.5 Ma
Miocene

References

Simpson G. G. (1935) Occurrence and relationships of the Rio Chico fauna of Patagonia, American Museum Novitates 818, 1-21
Simpson G. G. (1946) Fossil Penguins, Bulletin of the American Museum of Natural History 87 1, 1-100
Simpson G. G. (1948) The beginning of the age of mammals in South America. Part I, Bulletin of the American Museum of Natural History 91, 1-232
Simpson G. G. (1967) The beginning of the age of mammals in South America. Part II., Bulletin of the American Museum of Natural History 137, 1-260
Simpson G. G. (1972) Conspectus of Patagonian fossil penguins, American Museum Novitates 2488, 1-37
Simpson G. .G. (1981) Notes on some fossil penguins, including a new genus from Patagonia, Ameghiniana 18 3-4, 266-272
Marshall L. G. (1982) Systematics of the extinct South American marsupial family Polydolopidae, Fieldiana Geology 12, 1-109
Cifelli R. L., Soria M. F. (1983) Systematics of the Adianthidae (Litopterna, Mammalia), American Museum Novitates 2771, 1-25
Vucetich M. G., Bond M. (1984) Un nuevo Octodontoidea (Rodentia, Caviomorpha) del Oligoceno tardio de la provincia de Chubut (Argentina), Ameghiniana 21 1, 105-114
Vucetich M. G. (1989) Rodents (Mammalia) of the Lacayani fauna revisited (Deseadan, Bolivia). Comparison with new Chinchillidae and Cephalomyidae from Argentina, Bulletin du Muséum national d'histoire naturelle 11 4, 233-247
Cozzuol M. (1991) Primer registro de un pinnipedo terciario en Patagonia, Ameghiniana 28 3-4, 406
de Broin F., de la Fuente M. (1993) Les tortues fossiles d'Argentine: synthese [The fossil turtles of Argentina: synthesis], Annales de Paléontologie (Invertebrés-Vertebrés) 79 3, 169-232
de la Fuente M. S. (1994) Descripción de nuevos especímenes y relaciones filogenéticas de Chelonoidis gringorum (Simpsom, 1942) (Chelonii: Testudinidae) del Mioceno temprano, Studia Geologica Salmanticencia 30, 107-131
Albino A. M. (1996) Snakes from the Miocene of Patagonia (Argentina) Part II: The Colubroidea, Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 200 3, 353-360
Albino A. M. (1996) Snakes from the Miocene of Patagonia (Argentina) Part I: The Booidea, Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 199 3, 417-434
Vucetich M. G., Verzi D. H. (1996) A peculiar octodontoid (Rodentia, Caviomorpha) with terraced molars from the Lower Miocene of Patagonia (Argentina), Journal of Vertebrate Paleontology 16 2, 297-302 doi:10.2307/4523720
Kramarz A. G. (1998) Un nuevo Dasyproctidae (Rodentia, Caviomorpha) del Mioceno inferior de Patagonia, Ameghiniana 35 2, 181-192
Kramarz A. G. (2001) Revision of the family Cephalomyidae (Rodentia, Caviomorpha) and new cephalomyids from the Early Miocene of Patagonia, Palaeovertebrata 30 1–2, 51-88
Kramarz A. G. (2002) Registro de Eoviscaccia (Rodentia, Chinchillidae) en estratos colhuehuapenses de Patagonia, Argentina, Ameghiniana 38 3, 237-242
Carlini A. A., Pascual R., et al (2007) A new argyrolagid marsupial from the Early Miocene of Patagonia (Argentina), Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 245 3, 323-330 doi:10.1127/0077-7749/2007/0245-0323
Kay R. F., Fleagle J. G., et al (2008) The anatomy of Dolichocebus gaimanensis, a stem platyrrhine monkey from Argentina, Journal of Human Evolution 54 3, 323-382 doi:10.1016/j.jhevol.2007.09.002
Noriega J. I., Tambussi C. P. (2008) New material of Cayaoa bruneti TONNI, an Early Miocene anseriform (Aves) from Patagonia, Argentina, Neues Jahrbuch für Geologie und Paläontologie 249 3, 271-280 doi:10.1127/0077-7749/2008/0249-0271
Vucetich M. G., Kramarz A. G., et al (2010) Colhuehuapian rodents from Gran Barranca and other Patagonian localities: the state of the art, The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia, 206-219
Goin F. J., Abello M. A. (2013) Los Metatheria sudamericanos de comienzos del Neógeno (Mioceno temprano, Edad Mamífero Colhuehuapense): Microbiotheria y Polydolopimorphia, Ameghiniana 50 1, 51-78 doi:10.5710/AMGH.9.11.2012.570
Arnal M., Kramarz A. G., et al (2014) A new early Miocene octodontoid rodent (Hystricognathi, Caviomorpha) from Patagonia (Argentina) and a reassessment of the early evolution of Octodontoidea, Journal of Vertebrate Paleontology 34 2, 397-406 doi:10.1080/02724634.2013.808203
Arnal M., Vucetich M. (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 doi:10.1080/08912963.2013.863881
Busker F., Pérez M. E., et al (2019) A new chinchilloid (Rodentia, Hystricognathi) from the early Miocene of the localities of Bryn Gwyn and Gran Barranca (Patagonia, Argentina), Comptes Rendus Palevol 18 5, 525-540 doi:10.1016/j.crpv.2019.05.003
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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