900 m SW of Punta Hermengo (upper): Lujanian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Megatheriidae
Megatherium sp. Cuvier 1796
Mammalia - Mylodontidae
Mammalia - Rodentia - Ctenomyidae
Ctenomys sp. de Blainville 1826
Mammalia - Panameriungulata - Macraucheniidae
Mammalia - Perissodactyla - Equidae
see common names

Geography
Country:Argentina State/province:Buenos Aires
Coordinates: 38.3° South, 57.9° West (view map)
Paleocoordinates:
Basis of coordinate:based on political unit
Altitude:17 meters
Geographic resolution:small collection
Time
Period: Quaternary Epoch: Pleistocene
10 m.y. bin: Cenozoic 6
Key time interval: Lujanian
Age range of interval: 0.4 - 0.0117 m.y. ago
Stratigraphy
Formation:Arroyo Seco
Stratigraphic resolution:group of beds
Stratigraphy comments: collection from above the erosional unconformity that divides the Miramar formation from the Arroyo Seco Formation, within the upper part of the cliff (barranca)
Lithology and environment
Primary lithology:medium calcareous sandstone
Includes fossils?Y
Lithology description: translated: calcareous and quartzose phenoclasts in a matrix of medium to coarse sand with a calcium carbonate cement.
Environment:fluvial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some genera,species names
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:37999
Authorizer:J. Alroy Enterer:J. Wertheim
Modifier:J. Wertheim Research group:vertebrate
Created:2004-03-30 16:22:14 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-03-30 16:22:14
Creative Commons license:CC0
Reference information

Primary reference:
9817.5% 39360E. P. Tonni. 1970. Zonotrichia robusta n.sp. (Aves, Passeriformes, Emberizidae) from middle Pleistocene of Buenos Aires Province. Ameghiniana 7:161-165 [J. Alroy/J. Wertheim/J. Alroy]