Gran Barranca Upper Fossil Zone (Miocene of Argentina)

Also known as "Pinturan" level

Where: Chubut, Argentina (45.7° S, 68.7° W: paleocoordinates 46.4° S, 62.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Pinturan mammal zone, Colhue-Huapi Member (Sarmiento Formation), Colhuehuapian (21.0 - 17.5 Ma)

• "Pinturan" SALMA, Early Miocene, ca. 18.7–19.7 Ma.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: A. G. Kramarz, M. G. Vucetich, A. A. Carlini, M. R. Ciancio, M. A. Abello, C. M. Deschamps, and J. N. Gelfo. 2010. A new mammal fauna at the top of the Gran Barranca sequence and its biochronological significance. 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 264-277 [J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 176205: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 31.01.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Notoungulata - Hegetotheriidae
Pachyrukhos sp. Ameghino 1885 notoungulate
MPEF-PV 7299, mandible fragment with two cheek teeth; 7287, maxillary P3-M1; 8123; five upper and four lower cheek teeth; 8125, one upper and three lower cheek teeth
 Notoungulata - Interatheriidae
Interatherium sp. Ameghino 1887 notoungulate
MPEF-PV 7291, mandible m3; 7294, maxillary with two teeth; 7296, maxillary P4-M2; 8126; two upper and four lower cheek teeth; 8214, one upper and nine lower cheek teeth
 Notoungulata - Protypotheriidae
Protypotherium sp. Ameghino 1882 notoungulate
MPEF-PV 7282, maxillary fragment with partial P3-M3
 Rodentia - Dinomyidae
Dinomyidae "gen. et sp. nov." Peters 1873 caviomorph
MPEF-PV 6068a, m3; 6068b, M1 or M2; 7977, M3
 Rodentia - Dasyproctidae
Neoreomys pinturensis Kramarz 2006 caviomorph
MPEF-PV 7986, M1 or M2
 Rodentia - Eocardiidae
Luantus propheticus Ameghino 1899 caviomorph
MPEF-PV 6062a, m1 or m2
 Rodentia -
? Eosteiromys sp. Ameghino 1902 caviomorph
MPEF-PV 7981, M1 or M2; 6064a, incomplete p4; 6064d, incomplete m; 6064e, incomplete m3
 Rodentia - Acaremyidae
Acaremys sp. Ameghino 1887 caviomorph
MPEF-PV 7989, p4; 7982a, m1 or m2
 Rodentia - Echimyidae
Prostichomys bowni Kramarz 2001 spiny rat
MPEF-PV 7990, dp4; 7980, m1 or m2; 7976, m1 or m2; 7318a, DP4
Prostichomys cf. bowni Kramarz 2001 spiny rat
MPEF-PV 6066, M1 or M2; 7318c, M1 or M2; 7381d, M3
 Rodentia -
Acarechimys sp. Patterson 1965 caviomorph
MPEF-PV 6063, upper molar
 Cingulata - Dasypodidae
Proeutatus sp. Ameghino 1891 armadillo
MPEF-PV 7314A, 7315A, 8122D, osteoderms
Stenotatus cf. patagonicus Ameghino 1887 armadillo
MPEF-PV 7315B, 8121, 8122C, osteoderms
Prozaedyus sp. Ameghino 1891 armadillo
MPEF-PV 7315C, 8119, 8122B, osteoderms
 Cingulata - Peltephilidae
Peltephilus pumilus Ameghino 1887 edentate
MPEF-PV 8120C, fixed osteoderm
 Xenarthra - Mylodontidae
Nematherium sp. Ameghino 1887 edentate
MPEF-PV 7289, right mandibular fragment with p3-4
 Xenarthra -
Stegotherium variegatum, "Stegotherium tessellatum" = Stegotherium tesselatum
Stegotherium variegatum Ameghino 1902 edentate
MPEF-PV 8118A, 8122F, osteoderms
"Stegotherium tessellatum" = Stegotherium tesselatum Ameghino 1887 edentate
MPEF-PV 7315D, 8818B, 8122A, osteoderms
 Xenarthra - Propalaehoplophoridae
"Propalaehoplophorinae indet." = Propalaehoplophoridae
"Propalaehoplophorinae indet." = Propalaehoplophoridae Ameghino 1891 edentate
MPEF-PV 7281, 7314B, 7350, 7521, 8120B, osteoderms
 Ungulata - Proterotheriidae
Tetramerorhinus sp. Ameghino 1894 eutherian
MPEF-PV 8128, incomplete M1 or M2
 Paucituberculata - Palaeothentidae
Titanothentes sp. Rae et al. 1996 marsupial
MPEF-PV 4541, M1; MPEF-PV 4544, maxillary with partial M1 and complete M2
Palaeothentes ? minutus Ameghino 1887 marsupial
MPEF-PV 4543, right m2
 Paucituberculata - Abderitidae
Abderites meridionalis Ameghino 1887 marsupial
MPEF-PV 4104, m1; 4103, M2; 4105, partial M2