Puesto Estancia La Costa (Miocene of Argentina)

Also known as Corriguen Aike, Corriguen Kaik, Corriken Aike

Where: Santa Cruz, Argentina (51.2° S, 69.1° W: paleocoordinates 51.8° S, 63.4° 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

• 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/P. Wagner]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, Miranta Kouvari and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

 Falconiformes - Falconidae
Thegornis debilis8 Ameghino 1894 raptor
BMNH-A 601, distal right tarsometatarsus
 Gruiformes - Phorusrhacidae
Phorusrhacinae indet.7 Ameghino 1899 terror bird
MPEF-PV 11355: thoracic vertebra
Phorusrhacos longissimus Ameghino 1887 terror bird
Psilopterus lemoinei1 Moreno and Mercerat 1891 terror bird
 Meridiolestida -
Necrolestes patagonensis11 Ameghino 1891 mammal
 Sparassodonta -
"Sipalocyon gracilis" = Sipalocyon gracilis, "Amphiproviverra crassa n. sp." = Sipalocyon gracilis14, Perathereutes pungens11, "Cladosictis patagonica" = Cladosictis patagonica14, "Cladosictis lateralis n. sp." = Cladosictis patagonica14, "Lycopsis torresi" = Lycopsis torresi17, "Anatherium oxyrhynchus n. sp." = Lycopsis torresi13
"Sipalocyon gracilis" = Sipalocyon gracilis Ameghino 1887 metatherian
"Amphiproviverra crassa n. sp." = Sipalocyon gracilis14 Ameghino 1887 metatherian
MACN 5957, dentary p2-m4; MACN 5958, maxilla P1-M4; cotypes
Perathereutes pungens11 Ameghino 1891 metatherian
"Cladosictis patagonica" = Cladosictis patagonica14 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 patagonica14 Ameghino 1887 metatherian
MACN 5950, partial skull, holotype; MACN 5951, distal humerus, said to be same individual as 5950
"Lycopsis torresi" = Lycopsis torresi17 Cabrera 1927 metatherian
"Anatherium oxyrhynchus n. sp." = Lycopsis torresi13 Cabrera 1927 metatherian
MACN 5930, dentary p2-3, m2-4, holotype
 Sparassodonta - Borhyaenidae
Borhyaena tuberata17, Arctodictis munizi17, "Prothylacynus patagonicus n. gen. n. sp." = Prothylacynus patagonicus13, "Napodonictis thylacynoides n. gen. n. sp." = Prothylacynus patagonicus13, "Prothylacynus brachyrhynchus n. sp." = Prothylacynus patagonicus13
Borhyaena tuberata17 Ameghino 1887 metatherian
Arctodictis munizi17 Mercerat 1891 metatherian
"Prothylacynus patagonicus n. gen. n. sp." = Prothylacynus patagonicus13 Ameghino 1891 metatherian
"Napodonictis thylacynoides n. gen. n. sp." = Prothylacynus patagonicus13 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
"Prothylacynus brachyrhynchus n. sp." = Prothylacynus patagonicus13 Ameghino 1891 metatherian
MACN 5926, dentary left c, p2, m1-4, right p2, m2-4
 Paucituberculata - Palaeothentidae
Palaeothentes minutus Ameghino 1887 marsupial
Palaeothentes lemoinei Ameghino 1887 marsupial
 Microbiotheria - Microbiotheriidae
Microbiotherium tehuelchum15 Ameghino 1887 marsupial
MACN 8504, dentary m2-4; 8505, skull with left M1-4
 Cingulata - Peltephilidae
Peltephilus strepens Ameghino 1887 edentate
Peltephilus pumilus11 Ameghino 1887 edentate
 Cingulata - Propalaehoplophoridae
Cochlops muricatus11 Ameghino 1889 edentate
Propalaehoplophorus incisivus18 edentate
MACN-A 7655, skull; 7656, skull
Propalaehoplophorus australis11 Moreno 1882 edentate
Propalaehoplophorus minus18 Ameghino 1891 edentate
MACN-A 4757, mandible
 Cingulata - Chlamyphoridae
Prozaedyus proximus11 Ameghino 1887 edentate
"Proeutatus oenophorus" = Proeutatus oenophorum11 Ameghino 1887 edentate
Stenotatus patagonicus11 Ameghino 1887 edentate
 Theriamorpha -
Adiastaltus habilis n. gen. n. sp.16
Adiastaltus habilis n. gen. n. sp.16 Ameghino 1893 edentate
MACN A-7772, humerus, type; A-7773, ulna
  - Mylodontidae
Nematherium sp.11 Ameghino 1887 edentate
 Megatherioidea - Megalonychidae
Hyperleptus sp.11 Ameghino 1891 edentate
"Eucholaeops "sp. 1"" = Eucholoeops Amegino 1887 edentate
"Eucholaeops "sp. 2"" = Eucholoeops Amegino 1887 edentate
Eucholoeops fronto11 Ameghino 1891 edentate
Eucholoeops ingens11 Ameghino 1887 edentate
Hapalops "sp. 1" Ameghino 1887 edentate
Hapalops "sp. 2" Ameghino 1887 edentate
 Panameriungulata - Adianthidae
Adianthus bucatus n. gen. n. sp.6
Adianthus bucatus n. gen. n. sp.6 Ameghino 1891 placental
MACN A1812, dentary i2-m2, neotype
 Panameriungulata - Proterotheriidae
Thoatherium minusculum Ameghino 1887 placental
Tetramerorhinus cingulatum12 Ameghino 1891 placental
MACN A8666
"Tetramerorhinus mixtum n. sp." = Proterotherium australe5 Burmeister 1879 placental
MACN-A 8970–71, cranium, mandible, ulna, femur, tibia, type
"Tetramerorhinus mixtum" = Proterotherium australe12 Burmeister 1879 placental
MACN A 8970
Diadiaphorus robustus n. sp.5 Ameghino 1894 placental
MACN-A 9200–08, cranium and mandible
Diadiaphorus majusculus5 Ameghino 1887 placental
Licaphrium floweri Ameghino 1887 placental
 Panameriungulata - Macraucheniidae
Theosodon gracilis5 Ameghino 1891 placental
MACN-A 9297, mandible ("Corriguen Aike")
Theosodon lydekkeri n. sp.5 Ameghino 1887 placental
MACN-A 2487–90, cranium and mandible (type); MACN-A 9269–88, cranium and mandible
 Primates - Homunculidae
Homunculus patagonicus n. gen. n. sp.10
Homunculus patagonicus n. gen. n. sp.10 Ameghino 1891 monkey
 Rodentia - Octodontidae
Sciamys sp.11 Ameghino 1887 caviomorph
 Rodentia - Abrocomidae
"Acarechimys constans" = Ameghinomys constans3
"Acarechimys constans" = Ameghinomys constans3 Ameghino 1887 chinchilla rat
MPM-PV 4223 MPM-PV 15002
 Rodentia -
Spaniomys modestus Ameghino 1887 caviomorph
 Rodentia - Acaremyidae
Acaremys murinus2 Ameghino 1887 caviomorph
MACN A 4143 ("Corrigen Aike")
 Rodentia -
Steiromys duplicatus4 Ameghino 1887 caviomorph
MACN-A 10053–54, skull and right dentary; MACN-A 10055–78, maxillary, dentary, postcrania (both "Corriguen Kaik")
Steiromys detentus11 Ameghino 1887 caviomorph
Eocardia montana Ameghino 1887 caviomorph
Neoreomys australis Ameghino 1887 caviomorph
 Rodentia - Eocardiidae
"Eocardia fissa" = Dicardia fissa11
"Eocardia fissa" = Dicardia fissa11 Ameghino 1891 caviomorph
 Rodentia - Neoepiblemidae
Perimys sp. Ameghino 1887 caviomorph
 Notoungulata - Hegetotheriidae
Hegetotherium mirabile Ameghino 1887 notoungulate
 Notoungulata - Interatheriidae
Protypotherium australe, Protypotherium claudum9, "Protypotherium praerutilum" = Protypotherium praerutilum5, "Protypotherium attenuatum" = Protypotherium praerutilum5, "Interatherium robustum" = Interatherium extensus
Protypotherium australe Moreno 1882 notoungulate
Protypotherium claudum9 Ameghino 1889 notoungulate
"Protypotherium praerutilum" = Protypotherium praerutilum5 Ameghino 1887 notoungulate
MACN-A 3920–21, cranium, mandible ("Corriguen Aike")
"Protypotherium attenuatum" = Protypotherium praerutilum5 Ameghino 1887 notoungulate
"Interatherium robustum" = Interatherium extensus Fernández et al. 2023 notoungulate
 Notoungulata - Toxodontidae
"Adinotherium ovinum" = Adinotherium ovinum11, "Adinotherium ferum n. sp." = Adinotherium ovinum5, Nesodon imbricatus5, Nesodon imbricatus11
"Adinotherium ovinum" = Adinotherium ovinum11 Owen 1846 notoungulate
"Adinotherium ferum n. sp." = Adinotherium ovinum5 Owen 1846 notoungulate
MACN-A 5352–53, cranium, mandible, type
Nesodon imbricatus5 Owen 1846 notoungulate
MACN-A 5145, mandible; MACN-A 774–775, cranium
Nesodon imbricatus11 Owen 1846 notoungulate
 Notoungulata - Homalodotheriidae
Homalodotherium cunninghami11 Flower 1884 notoungulate
 Astrapotheria - Astrapotheriidae
Astrapotherium magnum Owen 1853 placental