Sella, Bed 4: Arenig, Bolivia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Afghanodesmatida - Tironuculidae
Natasia boliviensis (Babin and Branisa 1987)
Bivalvia - Arcida - Glyptarcidae
Bivalvia - Modiomorphida - Modiomorphidae
Bivalvia - Coxiconchiidae
see common names

Geography
Country:Bolivia State/province:Tarija
Coordinates: 21.4° South, 64.6° West (view map)
Paleocoordinates:32.6° South, 167.1° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period: Ordovician
10 m.y. bin: Ordovician 2-3
Key time interval: Arenig
Age range of interval: 477.1 - 468 m.y. ago
Stratigraphy
Formation:Sella Member:Upper
Local bed:150 m
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: middle Arenig (Baltographus deflexus / Baltograptus minutus zones)
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Lithology description: The upper member is composed of amalgamated quartzitic sandstone beds displaying low-angle cross stratificaiton and abundant Cruziana
Environment:carbonate indet.
Taphonomy
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: Beds 2 & 3 are 100 and 175 m up section, and have the identical fauna & lithology.
Metadata
Database number:57173
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2005-12-07 20:40:26 Last modified:2025-02-22 15:12:02
Access level:the public Released:2005-12-07 20:40:25
Creative Commons license:CC0
Reference information

Primary reference:
15483. T. M. Sánchez and C. Babin. 2005. Lower Ordovician bivalves from southern Bolivia: paleobiogeographic affinities. Ameghiniana 42(3):559-566 [P. Wagner/P. Wagner]