Güer Aike (Miocene of Argentina)

Where: Santa Cruz, Argentina (51.6° S, 69.6° W: paleocoordinates 52.2° S, 63.8° W)

• coordinate estimated from map

• 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 176591: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 17.02.2016, edited by Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
  - Mylodontidae
Nematherium sp.1
Nematherium sp.1 Ameghino 1887 edentate
YPM-VPPU 15374, postcrania
 Megatherioidea - Megatheriidae
Planops magnus n. sp.1
Planops magnus n. sp.1 Scott 1904 edentate
YPM-VPPU 15346, skull, type ("Güer Aike Department")
 Astrapotheria - Astrapotheriidae
Astrapotherium magnum3
Astrapotherium magnum3 Owen 1853 placental
YPM PU 15117, skull and jaw; YPM PU 15261, skull
 Notoungulata - Interatheriidae
Protypotherium sp.3, "Interatherium robustum" = Interatherium extensus2
Protypotherium sp.3 Ameghino 1882 notoungulate
FMNH P13234, skull and jaw
"Interatherium robustum" = Interatherium extensus2 Fernández et al. 2023 notoungulate
YPM-VPPU 15041, femur, tibia
 Notoungulata - Toxodontidae
Adinotherium ovinum3, Nesodon imbricatus3
Adinotherium ovinum3 Owen 1846 notoungulate
YPM PU 15986, YPM PU 15114, skulls
Nesodon imbricatus3 Owen 1846 notoungulate
YPM PU 15000, YPM PU 15336, YPM, PU 15492, all skulls
 Panameriungulata - Macraucheniidae
Theosodon garrettorum n. sp.2, "Theosodon lallemanti" = Theosodon lydekkeri2
Theosodon garrettorum n. sp.2 placental
YPM-VPPU 15164, mandible, humerus, ulna, femur, tibia (holotype) ("Güer Aike Department")
"Theosodon lallemanti" = Theosodon lydekkeri2 Ameghino 1887 placental
YPM-VPPU 15216, humerus and tibia
1Bargo et al. 2012; 2Cassini et al. 2012; 3MacPhee et al. 2021