Sta. 285 - Ponce [Ponce Fm] (Miocene of Puerto Rico)

Where: Puerto Rico (18.0° N, 66.6° W: paleocoordinates 17.8° N, 65.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ponce Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Ponce chalky beds [subsequently referred to as Ponce Fm] which regionally overlie the Collazo Shale, is overlain by the Quebradillas Limestone (Early-Middle Miocene), and is laterally related to the Lares and Aguadilla Limestones. Correlatable to the Las Cahobe and Thomonde Fm (Haiti), Anguilla Fm (Anguilla), upper Culebra Fm (canal zone), and Tampa Fm (Florida). AGE: Late Oligocene based on macro- and microfaunal biostratigraphy in text. Here assigned to Early Miocene based on more recent dating. STRATIGRAPHIC POSITION: From unknown position within formation.

• bed-level stratigraphic resolution

Environment/lithology: lithified lime mudstone

• ENVIRONMENT: Shallow carbonate setting.
• SPECIFIC LITHOLOGY: Chalk. 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 80289: authorized by Austin Hendy, entered by Austin Hendy on 10.04.2008

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.
Bivalvia
 Lucinida - Lucinidae
"Lucina chrysostoma" = Anodontia alba
"Lucina chrysostoma" = Anodontia alba Link 1807 clam
Gastropoda
 Cephalaspida -
 Neogastropoda - Olividae
Oliva cf. brevispira Gabb 1873 olive snail
[entered as Oliva brevispina]
 Neogastropoda - Terebridae
"Terebra cirrus" = Terebra (Strioterebrum) cirrus
"Terebra cirrus" = Terebra (Strioterebrum) cirrus Dall 1895 auger snail
 Sorbeoconcha - Turritellidae