Sta. 368 - Guanica Harbor [Collazo Shale] (Oligocene of Puerto Rico)

Where: Puerto Rico (18.0° N, 66.9° W: paleocoordinates 16.9° N, 66.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Collazo Shale Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, green shale

• ENVIRONMENT: Offshore siliciclastic setting.
• SPECIFIC LITHOLOGY: Green shale. LITHIFICATION: Lithified, on the basis of taphonomic data.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Reeds in 1915

Collection methods: surface (in situ),

• COLLECTOR: C. Reeds (AMNH), 1915. REPOSITORY: Not stated, but is likely to be AMNH, New York.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80195: authorized by Austin Hendy, entered by Austin Hendy on 08.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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.
 Ostreida - Gryphaeidae
"Ostrea antiguensis" = Pycnodonte (Crenostrea) antiguensis
"Ostrea antiguensis" = Pycnodonte (Crenostrea) antiguensis Brown 1913 oyster
 Pholadida - Teredinidae
"Teredo incrassata" = Kuphus incrassatus
"Teredo incrassata" = Kuphus incrassatus Gabb 1873 clam