A-9775: Middle Albian - Early/Lower Cenomanian, Venezuela

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Pectinida - Neitheidae
Neithea (Neitheops) cf. occidentalis Conrad 1855
Bivalvia - Ostreida - Ostreidae
Lopha scyphax
see common names

Geography
Country:Venezuela State/province:Trujillo
Coordinates: 9.1° North, 70.4° West (view map)
Paleocoordinates:1.6° North, 45.0° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Cretaceous
Key time interval:Middle Albian - Early/Lower Cenomanian
Age range of interval:109.90000 - 93.90000 m.y. ago
Stratigraphy
Formation:Cogollo
Stratigraphic resolution:bed
Stratigraphy comments: probabaly equivalent to A-8841
Lithology and environment
Primary lithology:coarse,gray,blue "limestone"
Lithology description: bluish-gray, massive, hard coarsely crystalline limestone, locally very fossiliferous. grades into underlying predominately sandy Uribante Fm through a series of massive beds of hard, sandy limestones and calcareous sandstones separated by layers of softer sandy shales and calcareous shales
Environment:marine indet.
Taphonomy
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:64455
Authorizer:L. Ivany Enterer:L. Ivany
Research group:marine invertebrate
Created:2006-09-08 21:48:01 Last modified:2006-09-09 00:48:01
Access level:the public Released:2006-09-08 21:48:00
Creative Commons license:CC BY
Reference information

Primary reference:
18619. R.F. Rutsch and A. Salvador. 1954. Mollusks from the Cogollo and La Luna Formations (Cretaceous) of the Chejende area, western Venezuela. Journal of Paleontology 28(4):417-426 [L. Ivany/L. Ivany]