ammonites

Río de las Conchas: Campanian - Maastrichtian, Argentina

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:Argentina State/province:Salta
Coordinates: 25.5° South, 64.7° West (view map)
Paleocoordinates:28.6° South, 48.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Key time interval:Campanian - Maastrichtian
Age range of interval:83.5 - 65.5 m.y. ago
Stratigraphy
Formation:Las Curtiembres Member:Morales
Stratigraphy comments: Late Cretaceous and "not older than Campanian-Maastrichtian" (Narváez and Sabino 2008)
Lithology and environment
Primary lithology:green lithified sandy siltstone
Secondary lithology: unlithified "limestone"
Lithology description: "green siltstones, whitish sandstones and micritic limestones"; limestones dominated in the lower part of the illustrated section and alternating "shales" and sandstones (with some conglomerates) in the middle and upper parts (Narváez and Sabino 2008)
Environment:lacustrine indet.
Geology comments: "lacustrine" (Narváez and Sabino 2008)
Taphonomy
Modes of preservation:body,adpression
Size of fossils:macrofossils
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:92119
Authorizer:J. Alroy Enterer:J. Alroy
Research group:vertebrate
Created:2009-11-01 13:36:21 Last modified:2009-11-01 13:36:21
Access level:the public Released:2009-11-01 13:36:21
Reference information
Primary reference:
31028 A. M. Baez and L. Trueb. 1997. Redescription of the Paleogene Shelania pascuali from Patagonia and its bearing on the relationships of fossil and Recent pipoid frogs. Scientific Papers, Natural History Museum, University of Kansas 4:1-41 [J. Alroy/J. Alroy]