Quebrada Fiera (north side of the ravine) ( of Argentina)

Where: Mendoza, Argentina (36.6° S, 69.7° W: paleocoordinates 37.8° S, 62.9° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Agua de la Piedra Formation (Malargüe Group), Deseadan (29.0 - 21.0 Ma)

• Base of the Agua de la Piedra Formation

•Schmidt et al. 2019: The faunal assemblage was then assigned to the Late Oligocene (Deseadan SALMA) based on the presence of two typical representatives of the Deseadean fauna of Patagonia: Pyrotherium Ameghino, 1888 and Proborhyaena gigantea Ameghino, 1897 (Gorroño et al., 1979; Bond and Pascual, 1983; Cerdeño and Vera, 2017). New faunal data confirm the Deseadan age, but absolute dating is lacking for Quebrada Fiera.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; gray, white tuff

• white-grayish tuffs and tobaceous paleosols, with laminated or massive parallel stratification

Size classes: macrofossils, mesofossils

Collected in 1970s; 2006 onwards

• Schmidt et al. 2019: The site was discovered during a geological prospection carried out by Yacimientos Petrolíferos Fiscales (YPF) in the late seventies (Gorroño et al., 1979).

Primary reference: E. Cerdeño. 2012. Quebrada Fiera (Mendoza), an important paleobiogeographic center in the South American late Oligocene. Estudios Geológicos 67(2):375-384 [J. Zijlstra/J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 176466: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 13.02.2016, edited by Philip Mannion and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sparassodonta - Proborhyaenidae
Proborhyaena gigantea Ameghino 1897 metatherian
 Sparassodonta - Borhyaenidae
Pharsophorus sp. Ameghino 1897 metatherian
 Theriamorpha -
Fieratherium sorex n. gen. n. sp.9
Fieratherium sorex n. gen. n. sp.9 Forasiepi et al. 2014 metatherian
MCNAM-PV 3958, associated premaxilla, maxilla, and dentaries
 Theriamorpha - Pyrotheridae
 Notoungulata - Notohippidae
Notohippidae indet.6 Ameghino 1894 notoungulate
MCNAM-PV 3851 and 3842
 Notoungulata - Leontiniidae
Gualta cuyana n. gen. n. sp.7
Gualta cuyana n. gen. n. sp.7 Cerdeño and Vera 2015 notoungulate
 Notoungulata -
Mendozahippus fierensis n. gen. n. sp.5 Cerdeño and Vera 2010 notoungulate
MCNAM-PV 4004, skull; MCNAM-PV 3846, palatal fragments; additional material was recovered later according to ref. 58076
cf. Mendozahippus fierensis5 Cerdeño and Vera 2010 notoungulate
MLP 96-XI-20-14, associated upper teeth
 Notoungulata - Toxodontidae
Toxodontidae indet.10 Ameghino 1889 notoungulate
Proadinotherium sp. Ameghino 1894 notoungulate
MCNAM-PV 4238, 4960, 3843, 4085 and 4215
 Notoungulata - Homalodotheriidae
Asmodeus petrasnerus n. sp.14 Seoane and Cerdeño 2014 notoungulate
 Notoungulata - Hegetotheriidae
Hegetotheriopsis sulcatus12 Kramarz and Paz 2013 notoungulate
MCNAM-PV 3984, 3852 and 4620
Hegetotheriinae indet.11 notoungulate
Prohegetotherium sp.3 Ameghino 1897 notoungulate
MCNAM-PV 4406, 4652, 4656, 4666
Prohegetotherium schiaffinoi3 Kraglievich 1932 notoungulate
MCNAM-PV 3959, 5076 (and more)
Prohegetotherium cf. schiaffinoi11 Kraglievich 1932 notoungulate
Prohegetotherium cf. sculptum3 Ameghino 1897 notoungulate
Prohegetotherium malalhuense n. sp.3 Cerdeño and Reguero 2015 notoungulate
MCNAM-PV 3848 - type
cf. Prosotherium sp. Ameghino 1897 notoungulate
Prosotherium garzoni15 Ameghino 1897 notoungulate
MCNAM-PV 4189 (and more)
 Notoungulata - Interatheriidae
Interatheriidae sp. Ameghino 1887 notoungulate
Interatheriinae indet.11 Simpson 1945 notoungulate
"Plagiarthrus sp." = Argyrohyrax Ameghino 1897 notoungulate
Argyrohyrax proavus16 Ameghino 1897 notoungulate
MCNAM-PV 3855 (and more)
Progaleopithecus sp.16 Ameghino 1904 notoungulate
 Notoungulata - Mesotheriidae
Trachytherus cf. spegazzinianus2 Ameghino 1889 notoungulate
 Notoungulata - Archaeohyracidae
cf. Archaeotypotherium sp.4 Roth 1903 notoungulate
Archaeohyrax suniensis4 Billet et al. 2009 notoungulate
MCNAM-PV 3849, 3850, 3969; MLP 96-XI-20-8, and MLP 96-XI-20-7, MLP 79-XII-18-47, MCNAM-PV 3845, MCNAM-PV 3954, MCNAM-PV 4060, MLP 77-VI-1-1, and MLP 77-VI-1-2, MCNAM-PV 4067 PV 4068, PV 4144, PV 4146, MLP 79-XI-18-44, MLP 79-XI- 18-46, and MLP 96-XI-20-10
 Megatherioidea - Megalonychidae
? Megalonychidae indet. Gervais 1855 edentate
 Cingulata - Chlamyphoridae
 Cingulata - Dasypodidae
Meteutatus aff. lagenaformis1 Ameghino 1897 armadillo
 Cingulata - Glyptodontidae
Glyptodontidae indet. Burmeister 1879 glyptodon
 Placentalia -
 Panameriungulata - Proterotheriidae
cf. Lambdaconus suinus13 Ameghino 1897 placental
 Panameriungulata - Macraucheniidae
Coniopternium andinum13 Ameghino 1894 placental
 Rodentia - Acaremyidae
Acaremyidae indet. Wood 1949 caviomorph
 Gruiformes - Phorusrhacidae
cf. Andrewsornis sp. Patterson 1941 terror bird
Gastropoda indet. Cuvier 1795 snail