Km 29: Tortonian, Brazil

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Actinopterygii
entered as "Actinopterigii indet."
Actinopteri - Siluriformes
Mammalia
Reptilia - Crocodylidae
entered as "Crocodilidae indet."
Reptilia
Reptilia - Gavialidae
Gavialidae indet. Adams 1854
Ceratodontiformes - Lepidosirenidae
Lepidosiren sp. Fitzinger 1837
Bivalvia
Malacostraca - Decapoda - Cancridae
see common names

Geography
Country:Brazil State/province:Acre
Coordinates: 8.2° South, 70.5° West (view map)
Paleocoordinates:7.7° South, 68.1° West (Wright 2013)
Basis of coordinate:stated in text
Time
Period: Neogene Epoch: Miocene
Stage: Tortonian 10 m.y. bin: Cenozoic 6
Key time interval: Tortonian
Age range of interval: 11.63 - 7.246 m.y. ago
Stratigraphy
Formation:Solimoes
Lithology and environment
Primary lithology: claystone
Secondary lithology: siltstone
Includes fossils?Y
Includes fossils?Y
Lithology description: fine sediments, mostly clays and silts, with sand/clay rhythmic intercalations and unconsolidated sand at the tope. Conglomeratic lenses of variable thickness, composed of clay-ball pebbles, indicate an intraformational origin
Environment:fluvial-lacustrine indet.
Taphonomy
Modes of preservation:body,original phosphate
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Also known as:Road BR 364
Database number:67385
Authorizer:M. Uhen Enterer:M. Uhen
Research group:vertebrate
Created:2006-11-17 13:27:34 Last modified:2025-02-22 15:12:02
Access level:the public Released:2006-11-17 13:27:31
Creative Commons license:CC0
Reference information

Primary reference:
19222. M. A. Cozzuol. 2006. The Acre vertebrate fauna: Age, diversity, and geography. Journal of South American Earth Sciences 21:185-203 [M. Uhen/M. Uhen]