Mount St. George village area (2H39): Albian, Trinidad and Tobago

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa - Nassellaria - Archaeodictyomitridae
Thanarla sp. Pessagno 1977
Dictyomitra sp. Zittel 1876
Dictyomitra montisserei (Squinabol 1903)
Protozoa - Nassellaria - Neosciadiocapsidae
Protozoa - Nassellaria - Ultranaporidae
Napora sp. Pessagno 1977
Protozoa - Nassellaria - Pseudodictyomitridae
Pseudodictyomitra sp. Pessagno 1977
Protozoa - Spumellaria - Parvivaccidae
Protozoa - Spumellaria - Pantanelliidae
Protozoa - Spumellaria - Archaeospongoprunidae
Protozoa - Spumellaria - Hagiastridae
Crucella sp. Pessagno 1971
Crucella messinae Pessagno 1971
see common names

Geography
Country:Trinidad and Tobago State/province:Tobago
Coordinates: 11.2° North, 60.7° West (view map)
Paleocoordinates:
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Early Cretaceous
Stage: Albian 10 m.y. bin: Cretaceous 4
Key time interval: Albian
Age range of interval: 113.2 - 100.5 m.y. ago
Stratigraphy
Geological group:Tobago Volcanic
Stratigraphic resolution:bed
Stratigraphy comments: early to middle Albian; correlative with the Kozurium zingulai zone (zone 7) of Albian age found in the northern Californian Coast Ranges (Pessagno, 1977)
Lithology and environment
Primary lithology:pyritic,black mudstone
Lithology description: organic-rich, black pyritic siliceous argillite
Environment:marine indet.
Geology comments: primary lithology occurs near the base of a mapable, volcanogenic sedimentary sequence
Taphonomy
Size of fossils:microfossils
Collection methods and comments
Collection excludes:difficult macrofossils
Collection methods:bulk,hydroflouric,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:49018
Authorizer:J. Alroy Enterer:D. Lamb
Modifier:J. Alroy Research group:micropaleontology
Created:2005-04-05 17:12:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2005-04-05 17:12:47
Creative Commons license:CC0
Reference information

Primary reference:
13024.1% 440A. W. Snoke and P.J. Noble. 2001. Ammonite-radiolarian assemblage, Tobago Volcanic Group, Tobago, West Indies--Implications for the evolution of the Great Arc of the Caribbean. Geological Society America Bulletin 113:256-264 [J. Alroy/D. Lamb/D. Lamb]