Sta. 110 - Rio Guajataca [Quebradillas Limestone]: Middle Miocene, Puerto Rico
collected by Reeds 1915

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Pectinida - Spondylidae
Spondylus lucasi Maury 1920
Bivalvia - Ostreida - Pteriidae
Pteria inornata (Gabb 1873)
Bivalvia - Cardiida - Tellinidae
    = Florimetis chipolana Dall 1900
Woodring 1982
Bivalvia - Pholadida - Teredinidae
Teredo incrassata (Gabb 1873)
Gastropoda - Naticidae
Gastropoda - Strombidae
Strombus cf. bifrons Sowerby 1850
see common names

Geography
Country:Puerto Rico County:Isabella
Coordinates: 18.5° North, 67.0° West (view map)
Paleocoordinates:19.4° North, 63.6° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Miocene
10 m.y. bin: Cenozoic 5
Key time interval: Middle Miocene
Age range of interval: 15.98 - 11.63 m.y. ago
Stratigraphy
Formation:Quebradillas Limestone
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Quebradillas Limestone, which regionally overlie the Ponce chalky beds [subsequently referred to as Ponce Fm], and is laterally related to the Oak Grove Sands (Florida). AGE: Early-Middle Miocene based on macro- and microfaunal biostratigraphy in text. Here assigned to Middle Miocene based on more recent dating. STRATIGRAPHIC POSITION: From unknown position within formation.
Lithology and environment
Primary lithology: lithified "limestone"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Limestone. LITHIFICATION: Lithified, on the basis of taphonomic data.
Environment:carbonate indet.
Geology comments: ENVIRONMENT: Shallow carbonate 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:80240
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2008-04-09 20:40:53 Last modified:2025-02-22 15:12:02
Access level:the public Released:2008-04-09 20:40:53
Creative Commons license:CC0
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]

Secondary references:

13359 W. P. Woodring. 1982. Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (Pelecypods: Propeamussiidae to Cuspidariidae). United States Geological Survey Professional Paper 306(F) [A. Miller/A. Hendy/A. Hendy]