Cañadón de Las Vacas (Miocene of Argentina)

Where: Santa Cruz, Argentina (50.6° S, 69.2° W: paleocoordinates 51.2° S, 63.5° W)

• coordinate stated in text

• local area-level geographic resolution

When: Santa Cruz Formation, Santacrucian (17.5 - 16.3 Ma)

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Primary reference: S. F. Vizcaíno, R. F. Kay, and M. S. Bargo. 2012. Background for a paleoecological study of the Santa Cruz Formation (late Early Miocene) on the Atlantic Coast of Patagonia. In S. F. Vizcaí­no, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 1-22 [J. Zijlstra/J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 176569: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 17.02.2016, edited by Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sparassodonta -
Sipalocyon gracilis4 Ameghino 1887 metatherian
AMNH 9238, dentary m1-3
Cladosictis patagonica4 Ameghino 1887 metatherian
AMNH 9134, partial skull, mandible, vertebrae and fragments; AMNH 9548, right dentary p2-m4, left dentary p1-m4; AMNH 9574 = USNM 5936, right dentary p1-m3, left dentary p1-m1, m4
 Sparassodonta - Borhyaenidae
Prothylacynus patagonicus3 Ameghino 1891 metatherian
MACN 14453, partial skull
 Notoungulata - Interatheriidae
"Interatherium robustum" = Interatherium extensus1
"Interatherium robustum" = Interatherium extensus1 Fernández et al. 2023 notoungulate
AMNH 15194, cranium and mandible
 Notoungulata - Toxodontidae
Adinotherium sp.1 Ameghino 1887 notoungulate
AMNH 9141, mandible
 Notoungulata - Homalodotheriidae
Homalodotherium sp.2 Huxley 1870 notoungulate
MPN PV 17490