Puesto Estancia La Costa (Miocene of Argentina)

Also known as Corriguen Aike

Where: Santa Cruz, Argentina (51.2° S, 69.1° W: paleocoordinates 52.0° S, 62.4° W)

• coordinate stated in text

• local area-level geographic resolution

When: Estancia La Costa Member (Santa Cruz Formation), Early/Lower Miocene (23.0 - 16.0 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

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; green, sandy claystone and tuffaceous, silty sandstone

• tuffaceous silty sands, andgreenish silty clays.

Size class: macrofossils

Collected in 2003-2009

Primary reference: S. F. Vizcaíno, M. S. Bargo, R. F. Kay, R. A. Fariña, M., Di Giacomo, J. M. G. Perry, F. J. Prevosti, N. Toledo, G. H. Cassini, and J. C. Fernicola. 2010. A baseline paleoecological study of the Santa Cruz Formation (late-early Miocene) at the Atlantic coast of Patagonia, Argentina. Palaeogeography, Palaeoclimatology, Palaeoecology 292(3-4):507-519 [C. Jaramillo/J. Carrillo]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 142533: authorized by Carlos Jaramillo, entered by Juan Carrillo on 13.04.2013, edited by Jelle Zijlstra

Creative Commons license: CC BY (attribution)

Taxonomic list

Aves
 Cariamae - Phorusrhacidae
"Phorusrhacos longissimus" = Phororhacos longissimus
"Phorusrhacos longissimus" = Phororhacos longissimus Ameghino 1887 terror bird
 Falconiformes - Falconidae
Thegornis debilis5 Ameghino 1894 raptor
BMNH-A 601, distal right tarsometatarsus
Mammalia
 Primates - Homunculidae
Homunculus patagonicus n. gen. n. sp.6
Homunculus patagonicus n. gen. n. sp.6 Ameghino 1891 monkey
 Notoungulata - Toxodontidae
Nesodon imbricatus3 Owen 1846 notoungulate
MACN-A 5145, mandible; MACN-A 774–775, cranium
Nesodon imbricatus7 Owen 1846 notoungulate
Adinotherium ovinum7 Owen 1846 notoungulate
Adinotherium ferum n. sp.3 Ameghino 1887 notoungulate
MACN-A 5352–53, cranium, mandible, type
 Notoungulata - Homalodotheriidae
 Notoungulata - Hegetotheriidae
Hegetotherium mirabile Ameghino 1887 notoungulate
 Notoungulata - Interatheriidae
Interatherium robustum Ameghino 1891 notoungulate
 Notoungulata - Protypotheriidae
Protypotherium attenuatum3 Ameghino 1887 notoungulate
Protypotherium australe Moreno 1882 notoungulate
Protypotherium praerutilum3 Ameghino 1887 notoungulate
MACN-A 3920–21, cranium, mandible ("Corriguen Aike")
 Rodentia - Neoepiblemidae
Perimys sp. Ameghino 1887 caviomorph
 Rodentia - Dasyproctidae
Neoreomys australis Ameghino 1887 caviomorph
 Rodentia - Eocardiidae
Eocardia montana, "Eocardia fissa" = Dicardia fissa7
Eocardia montana Ameghino 1887 caviomorph
"Eocardia fissa" = Dicardia fissa7 Ameghino 1891 caviomorph
 Rodentia -
Steiromys detentus7 Ameghino 1887 caviomorph
Steiromys duplicatus2 Ameghino 1887 caviomorph
MACN-A 10053–54, skull and right dentary; MACN-A 10055–78, maxillary, dentary, postcrania (both "Corriguen Kaik")
 Rodentia - Acaremyidae
Acaremys murinus1 Ameghino 1887 caviomorph
MACN A 4143 ("Corrigen Aike")
 Rodentia -
Spaniomys modestus Ameghino 1887 caviomorph
Sciamys sp.7 Ameghino 1887 caviomorph
 Cingulata - Dasypodidae
"Proeutatus oenophorus" = Proeutatus oenophorum7, Stenotatus patagonicus7, "Prozaedyus proximus" = Prozaedius proximus7
"Proeutatus oenophorus" = Proeutatus oenophorum7 Ameghino 1887 armadillo
Stenotatus patagonicus7 Ameghino 1887 armadillo
"Prozaedyus proximus" = Prozaedius proximus7 Ameghino 1887 armadillo
 Cingulata - Peltephilidae
Peltephilus pumilus7 Ameghino 1887 edentate
Peltephilus strepens Ameghino 1887 edentate
 Xenarthra -
Adiastaltus habilis n. gen. n. sp.11
Adiastaltus habilis n. gen. n. sp.11 Ameghino 1893 edentate
MACN A-7772, humerus, type; A-7773, ulna
 Xenarthra - Megalonychidae
Hyperleptus sp.7 Ameghino 1891 edentate
 Xenarthra -
"Eucholaeops "sp. 1"" = Eucholoeops, "Eucholaeops "sp. 2"" = Eucholoeops, Eucholoeops ingens7, Eucholoeops fronto7
"Eucholaeops "sp. 1"" = Eucholoeops Amegino 1887 edentate
"Eucholaeops "sp. 2"" = Eucholoeops Amegino 1887 edentate
Eucholoeops ingens7 Ameghino 1887 edentate
Eucholoeops fronto7 Ameghino 1891 edentate
 Xenarthra - Megatheriidae
Hapalops "sp. 1" Ameghino 1887 edentate
Hapalops "sp. 2" Ameghino 1887 edentate
 Xenarthra - Mylodontidae
Nematherium sp.7 Ameghino 1887 edentate
 Xenarthra - Glyptodontidae
Cochlops muricatus7 Ameghino 1889 glyptodon
Propalaehoplophorus incisivus13 glyptodon
MACN-A 7655, skull; 7656, skull
Propalaehoplophorus australis7 Ameghino 1887 glyptodon
Propalaehoplophorus minus13 Ameghino 1891 glyptodon
MACN-A 4757, mandible
 Ungulata - Adianthidae
Adianthus bucatus n. gen. n. sp.4
Adianthus bucatus n. gen. n. sp.4 Ameghino 1891 eutherian
MACN A1812, dentary i2-m2, neotype
 Ungulata - Macraucheniidae
Theosodon lydekkeri n. sp.3 Ameghino 1887 eutherian
MACN-A 2487–90, cranium and mandible (type); MACN-A 9269–88, cranium and mandible
Theosodon gracilis3 Ameghino 1891 eutherian
MACN-A 9297, mandible ("Corriguen Aike")
 Ungulata - Proterotheriidae
Tetramerorhinus mixtum n. sp.3 eutherian
MACN-A 8970–71, cranium, mandible, ulna, femur, tibia, type
Thoatherium minusculum Ameghino 1887 eutherian
Diadiaphorus majusculus3 Ameghino 1887 eutherian
Diadiaphorus robustus n. sp.3 Ameghino 1894 eutherian
MACN-A 9200–08, cranium and mandible
Licaphrium floweri Ameghino 1887 eutherian
 Ungulata - Astrapotheriidae
Astrapotherium magnum Owen 1853 eutherian
  - Necrolestidae
Necrolestes patagonensis7 Ameghino 1891 mammal
 Sparassodonta -
"Cladosictis patagonica" = Cladosictis patagonica9, "Cladosictis lateralis n. sp." = Cladosictis patagonica9, Perathereutes pungens7, "Sipalocyon gracilis" = Sipalocyon gracilis, "Amphiproviverra crassa n. sp." = Sipalocyon gracilis9, "Lycopsis torresi" = Lycopsis torresi12, "Anatherium oxyrhynchus n. sp." = Lycopsis torresi8
"Cladosictis patagonica" = Cladosictis patagonica9 Ameghino 1887 metatherian
MACN 5927, cranium; MACN 5928, dentary i1-p1, p3-m2; MACN 5929, vertebrae and other bones; MACN 6280, maxilla C-M4; MACN 6281, skull fragment; MACN 6282, vertebrae; MACN 6283, vertebrae; MACN 6284, proximal femur; MACN 6285, fibula
"Cladosictis lateralis n. sp." = Cladosictis patagonica9 Ameghino 1887 metatherian
MACN 5950, partial skull, holotype; MACN 5951, distal humerus, said to be same individual as 5950
Perathereutes pungens7 Ameghino 1891 metatherian
"Sipalocyon gracilis" = Sipalocyon gracilis Ameghino 1887 metatherian
"Amphiproviverra crassa n. sp." = Sipalocyon gracilis9 Ameghino 1887 metatherian
MACN 5957, dentary p2-m4; MACN 5958, maxilla P1-M4; cotypes
"Lycopsis torresi" = Lycopsis torresi12 Cabrera 1927 metatherian
"Anatherium oxyrhynchus n. sp." = Lycopsis torresi8 Cabrera 1927 metatherian
MACN 5930, dentary p2-3, m2-4, holotype
 Sparassodonta - Borhyaenidae
"Prothylacynus patagonicus n. gen. n. sp." = Prothylacynus patagonicus8, "Prothylacynus brachyrhynchus n. sp." = Prothylacynus patagonicus8, "Napodonictis thylacynoides n. gen. n. sp." = Prothylacynus patagonicus8, Arctodictis munizi12, Borhyaena tuberata12
"Prothylacynus patagonicus n. gen. n. sp." = Prothylacynus patagonicus8 Ameghino 1891 metatherian
"Prothylacynus brachyrhynchus n. sp." = Prothylacynus patagonicus8 Ameghino 1891 metatherian
MACN 5926, dentary left c, p2, m1-4, right p2, m2-4
"Napodonictis thylacynoides n. gen. n. sp." = Prothylacynus patagonicus8 Ameghino 1891 metatherian
MACN 5931, skull; MACN 5932, dentary with teeth; MACN 5933–5937, partial skeleton; all are one individual and part of the holotype
Arctodictis munizi12 Mercerat 1891 metatherian
Borhyaena tuberata12 Ameghino 1887 metatherian
 Microbiotheria - Microbiotheriidae
Microbiotherium tehuelchum10 Ameghino 1887 marsupial
MACN 8504, dentary m2-4; 8505, skull with left M1-4
 Paucituberculata - Palaeothentidae
Palaeothentes minutus Ameghino 1887 marsupial
Palaeothentes lemoinei Ameghino 1887 marsupial