PBDB Collection

Campo Barranca (Miocene of Argentina)

Where: Santa Cruz, Argentina (51.0° S, 69.2° W: paleocoordinates 51.6° S, 63.5° W)

• coordinate stated in text

• local area-level geographic resolution

When: Estancia La Costa Member (Santa Cruz Formation), Santacrucian (17.5 - 16.3 Ma)

• Dates from three levels in the lower one-third of the Santa Cruz fossiliferous beds at Monte Observación, rangebetween 16.42 Ma and 16.18 Ma and between 16.56 Ma and 16.28 Ma at Monte León. The dates are not wholly concordant but permit the assignment of the bulk of the coastal Santacrucian faunas to the late–early Miocene

•

•Kay et al 2008: This list will expand as previously collected specimens are prepared and with future collecting. At the moment, this faunal listfits within the Santacrucian SALMA (Marshall, 1976; Marshall et al., 1983).

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; green, silty, sandy claystone

• Greenish silty clay. In places, the clay is finely laminated — some layers have ripple marks and others are carbon-rich. Elsewhere, it is bioturbated, preserving calcified root casts, and has poorly defined bedding.

•

•The Campo Barranca fossil level is composed of a silty

•clay, greenish in color. In places, the clay is finely lami- nated—some layers have ripple marks and others are car- bon-rich. Elsewhere, it is bioturbated, preserving calcified root casts, and has poorly defined bedding.

Size class: macrofossils

Collected in 2003-2009

Primary reference: R. F. Kay, S.F. Vizcaino, M. S. Bargo, J. M. G. Perry, F. J. Prevosti and J. C. Fernicola. 2008. Two new fossil vertebrate localities in the Santa Cruz Formation (late early – early middle Miocene, Argentina), ~ 51° South latitude. Journal of South American Earth Sciences 25:187-195 [P. Mannion/M. Kouvari]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 142529: authorized by Carlos Jaramillo, entered by Juan Carrillo on 13.04.2013, edited by Jelle Zijlstra and Miranta Kouvari

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Aves
Gruiformes - Phorusrhacidae	Phorusrhacidae indet., Phorusrhacos longissimus⁴ Phorusrhacidae indet. Ameghino 1889 terror bird “Phorusrhacidae” indet. Phorusrhacos longissimus⁴ Ameghino 1887 terror bird MPM-PV 4241, mandible, left femur, tibiotarsus, and both fibulae (ref 58178)
Mammalia
Paucituberculata - Palaeothentidae	Palaeothentes minutus⁴ Palaeothentes minutus⁴ Ameghino 1887 marsupial
Sparassodonta -	Cladosictis patagonica⁴ Cladosictis patagonica⁴ Ameghino 1887 metatherian MPM-PV 4333 (ref 58202)
Sparassodonta - Borhyaenidae	Borhyaena tuberata³ Borhyaena tuberata³ Ameghino 1887 metatherian MPM-PV 3554
Notoungulata - Toxodontidae	Nesodon sp.⁴, Adinotherium sp.⁴, "Adinotherium ovinum" = Adinotherium ovinum, "Adinotherium ferum" = Adinotherium ovinum² Nesodon sp.⁴ Owen 1846 notoungulate Adinotherium sp.⁴ Ameghino 1887 notoungulate "Adinotherium ovinum" = Adinotherium ovinum Owen 1846 notoungulate "Adinotherium ferum" = Adinotherium ovinum² Owen 1846 notoungulate MPM-PV 3666, cranium, mandible; 3667, cranium, mandible
Notoungulata - Interatheriidae	Protypotherium sp., Protypotherium australe⁴, "Protypotherium cf. attenuatum" = Protypotherium praerutilum Protypotherium sp. Ameghino 1882 notoungulate Protypotherium australe⁴ Moreno 1882 notoungulate MPM-PV 3531, mandible (ref 58224) "Protypotherium cf. attenuatum" = Protypotherium praerutilum Ameghino 1887 notoungulate
Astrapotheria - Astrapotheriidae	Astrapotherium magnum⁴ Astrapotherium magnum⁴ Owen 1853 placental
Megatherioidea - Megalonychidae	Hapalops "sp. 1"⁴, Hapalops "sp. 2"⁴, cf. Hapalops sp., Eucholoeops sp., Eucholoeops sp.¹, Eucholoeops ingens¹ Hapalops "sp. 1"⁴ Ameghino 1887 edentate Hapalops "sp. 2"⁴ Ameghino 1887 edentate cf. Hapalops sp. Ameghino 1887 edentate Eucholoeops sp. Amegino 1887 edentate Eucholoeops sp.¹ Amegino 1887 edentate Eucholoeops ingens¹ Ameghino 1887 edentate MPM-PV 3452, skull. See also ref 71644
Cingulata - Chlamyphoridae	Stenotatus patagonicus, Stenotatus cf. patagonicus⁵, Proeutatus "sp. 1"⁴, Proeutatus "sp. 2"⁴, Proeutatus sp., "Proeutatus oenophorus" = Proeutatus oenophorum⁵, Prozaedyus sp., Prozaedyus proximus⁵ Stenotatus patagonicus Ameghino 1887 edentate Stenotatus patagonicus? Stenotatus cf. patagonicus⁵ Ameghino 1887 edentate Proeutatus "sp. 1"⁴ Ameghino 1891 edentate Proeutatus "sp. 2"⁴ Ameghino 1891 edentate Proeutatus sp. Ameghino 1891 edentate "Proeutatus oenophorus" = Proeutatus oenophorum⁵ Ameghino 1887 edentate MPM-PV 3438, osteoderms; 3439, partial skull; 3440, carapace fragment; 3442, osteoderms Prozaedyus sp. Ameghino 1891 edentate Prozaedyus proximus⁵ Ameghino 1887 edentate
Rodentia -	Stichomys sp.⁴, Spaniomys modestus⁴, Eocardia sp.⁴, Eocardia montana⁴, Eocardia excavata⁴, Neoreomys sp., Neoreomys australis⁴ Stichomys sp.⁴ Ameghino 1887 caviomorph Spaniomys modestus⁴ Ameghino 1887 caviomorph Eocardia sp.⁴ Ameghino 1887 caviomorph Eocardia montana⁴ Ameghino 1887 caviomorph Eocardia excavata⁴ Ameghino 1891 caviomorph Neoreomys sp. Ameghino 1887 caviomorph Neoreomys australis⁴ Ameghino 1887 caviomorph MPM-PV 4345, incomplete skull (ref 58225)
Rodentia - Eocardiidae	Phanomys mixtus⁴ Phanomys mixtus⁴ Ameghino 1887 caviomorph MPM-PV 4375 (ref 58197)
Rodentia - Neoepiblemidae	Perimys sp.⁴ Perimys sp.⁴ Ameghino 1887 caviomorph
Panameriungulata - Proterotheriidae	Diadiaphorus majusculus⁴ Diadiaphorus majusculus⁴ Ameghino 1887 placental MPM-PV 3397, cranium and mandible (ref 58224)

¹Bargo et al. 2012; ²Cassini et al. 2012; ³Prevosti et al. 2012; ⁴Vizcaíno et al. 2010; ⁵Vizcaíno et al. 2012