Sta. 61 - Rio Collazo [Collazo Shale]: Early/Lower Oligocene, Puerto Rico
collected by Reeds 1915

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Cardiida - Veneridae
Clementia rabelli Maury 1920
recombined as Clementia dariena rabelli
Bivalvia - Pholadida - Teredinidae
Teredo incrassata (Gabb 1873)
original and current combination Kuphus incrassatus
Gastropoda - Turritellidae
Turritella altilira Conrad 1857
recombined as Turritella (Bactrospira) altilira
see common names

Geography
Country:Puerto Rico
Coordinates: 18.3° North, 67.0° West (view map)
Paleocoordinates:17.2° North, 66.3° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Oligocene
Stage:Rupelian 10 m.y. bin:Cenozoic 4
Key time interval:Early/Lower Oligocene
Age range of interval:33.90000 - 28.40000 m.y. ago
Stratigraphy
Formation:Collazo Shale
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Collazo Shale which regionally underlies the Lares Limestone and Ponce chalky beds (Late Oligocene). Correlatable to the Antigua Fm (Antigua) and lower Culebra Fm (canal zone). AGE: Middle Oligocene based on macro- and microfaunal biostratigraphy. Here placed in the Early Oligocene. STRATIGRAPHIC POSITION: From unknown position within formation.
Lithology and environment
Primary lithology:green lithified "shale"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Green shale. LITHIFICATION: Lithified, on the basis of taphonomic data.
Environment:offshore
Geology comments: ENVIRONMENT: Offshore siliciclastic setting.
Taphonomy
Modes of preservation:body,cast,mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collectors:Reeds Collection dates:1915
Collection method comments: COLLECTOR: C. Reeds (AMNH), 1915. REPOSITORY: Not stated, but is likely to be AMNH, New York.
Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: An authoritative publication but with quite antiquated nomenclature. Nevertheless, all taxa are identified to species and subgenus resolution.
Metadata
Database number:80193
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2008-04-08 19:53:52 Last modified:2013-11-25 13:37:23
Access level:the public Released:2008-04-08 19:53:52
Creative Commons license:CC BY
Reference information

Primary reference:

26978. C. J. Maury. 1920. Tertiary Mollusca from Porto Rico. Scientific Survey of Porto Rico and the Virgin Islands 3(1):1-78 [A. Hendy/A. Hendy/A. Hendy]