Puesto Estancia La Costa Fossiliferous Level 6 (Miocene of Argentina)

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

• coordinate stated in text

• small collection-level geographic resolution

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

• formation-level stratigraphic resolution

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

Size class: macrofossils

Primary reference: F. J. Degrange, J. I. Noriega, and J. I. Areta. 2012. Diversity and paleobiology of the Santacrucian birds. In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 138-155 [J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 176603: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 17.02.2016, edited by Miranta Kouvari

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Rodentia -
Acarechimys minutus4 Patterson and Pascual 1967 caviomorph
 Rodentia - Neoepiblemidae
Perimys cf. erutus4 Ameghino 1887 caviomorph
 Rodentia -
Neoreomys australis4 Ameghino 1887 caviomorph
Neoreomys cf. australis4 Ameghino 1887 caviomorph
"Eocardia perforata" = Eocardia robusta4 Vucetich 1984 caviomorph
 Primates - Homunculidae
Homunculus patagonicus4 Ameghino 1891 monkey
 Panameriungulata - Proterotheriidae
Thoatherium sp.4 Ameghino 1887 placental
Thoatherium cf. minusculum4 Ameghino 1887 placental
Licaphrium floweri4 Ameghino 1887 placental
 Megatherioidea - Megalonychidae
cf. Hapalops sp.1 Ameghino 1887 edentate
MPM-PV 3404, incomplete skull and postcrania
Eucholoeops sp.1 Amegino 1887 edentate
MPM-PV 3402, postcrania
Eucholoeops cf. fronto1 Ameghino 1891 edentate
MPM-PV 3403, skull, mandible, postcrania
Eucholoeops fronto4 Ameghino 1891 edentate
 Cingulata - Dasypodidae
"Proeutatus cf. deleo" = Eutatus deleo4
"Proeutatus cf. deleo" = Eutatus deleo4 Ameghino 1891 armadillo
 Cingulata - Chlamyphoridae
Prozaedyus proximus4 Ameghino 1887 edentate
 Cingulata - Propalaehoplophoridae
"Propalaehoplophorinae indet." = Propalaehoplophoridae5, Propalaehoplophorus australis5
"Propalaehoplophorinae indet." = Propalaehoplophoridae5 Ameghino 1891 edentate
MPM-PV 3417, fragment of carapace
Propalaehoplophorus australis5 Moreno 1882 edentate
MPM-PV 3419, mandible and partial carapace
 Notoungulata - Toxodontidae
Adinotherium sp.4 Ameghino 1887 notoungulate
Adinotherium ovinum2 Owen 1846 notoungulate
MPM-PV 3532, cranium
 Notoungulata - Interatheriidae
"Protypotherium cf. attenuatum" = Protypotherium praerutilum4, Interatherium sp.4
"Protypotherium cf. attenuatum" = Protypotherium praerutilum4 Ameghino 1887 notoungulate
Interatherium sp.4 Ameghino 1887 notoungulate
 Notoungulata - Hegetotheriidae
Hegetotherium mirabile4 Ameghino 1887 notoungulate
 Astrapotheria - Astrapotheriidae
Astrapotherium magnum4 Owen 1853 placental
Astrapotherium cf. magnum4 Owen 1853 placental
 Sparassodonta - Borhyaenidae
Arctodictis munizi3 Mercerat 1891 metatherian
MACN A 5915-5917, jaws and 5918-5921, jaws and postcrania (each a single individual)
Aves
 Falconiformes - Falconidae
Thegornis musculosus Ameghino 1894 raptor
MPM-PV 3433, almost complete skeleton
 Gruiformes - Phorusrhacidae
"Psilopterus australis" = Psilopterus lemoinei4, Patagornis marshi, "Phororhacos longissimus" = Phorusrhacos longissimus4
"Psilopterus australis" = Psilopterus lemoinei4 Moreno and Mercerat 1891 terror bird
Patagornis marshi Moreno and Mercerat 1891 terror bird
MPM-PV 4342, sternum
"Phororhacos longissimus" = Phorusrhacos longissimus4 Ameghino 1887 terror bird
 Cariamiformes - Cariamidae
Cariaminae indet. Bonaparte 1853 seriema
MPM-PV 3510, tibiotarsus fragment