Monte Observación (Miocene of Argentina)

Also known as Cerro Observación

Where: Santa Cruz, Argentina (50.3° S, 69.0° W: paleocoordinates 51.0° S, 63.3° 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: taxonomic analysis

PaleoDB collection 176564: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 17.02.2016, edited by Miranta Kouvari and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Rodentia -
"Acarechimys pascuali" = Acarechimys gracilis4, "Ameghinomys constans" = Acarechimys constans4, Acarechimys minutus4
"Acarechimys pascuali" = Acarechimys gracilis4 Ameghino 1891 caviomorph
MACN A 4060
"Ameghinomys constans" = Acarechimys constans4 Ameghino 1887 caviomorph
MACN A 4075
Acarechimys minutus4 Patterson and Pascual 1967 caviomorph
 Rodentia - Chinchillidae
Pliolagostomus notatus5
Pliolagostomus notatus5 Ameghino 1887 chinchilid
MACN 4438 and 4433
 Notoungulata - Homalodotheriidae
Homalodotherium sp.3
Homalodotherium sp.3 Huxley 1870 notoungulate
MACN A 3206, skull
Aves
 Anseriformes -
"Brontornis burmeisteri" = Brontornis burmeisteri1, "Liornis floweri" = Brontornis burmeisteri2
"Brontornis burmeisteri" = Brontornis burmeisteri1 Moreno and Mercerat 1891 waterfowl
"Liornis floweri" = Brontornis burmeisteri2 Moreno and Mercerat 1891 waterfowl
NHMUK PV A9058, tibiotarsus; NHMUK PV A580, tarsometatarsus
 Gruiformes - Phorusrhacidae
Psilopterus bachmanni1, Psilopterus lemoinei1, Patagornis marshi1
Psilopterus bachmanni1 Moreno and Mercerat 1891 terror bird
Psilopterus lemoinei1 Moreno and Mercerat 1891 terror bird
Patagornis marshi1 Moreno and Mercerat 1891 terror bird
1Alvarenga and Holfing 2003; 2Buffetaut 2016; 3MacPhee et al. 2021; 4Verzi et al. 2017; 5Vucetich 1984