Sta. 126 - Quebradillas [Quebradillas Limestone] (Miocene of Puerto Rico)

Where: Puerto Rico (18.5° N, 67.0° W: paleocoordinates 18.4° N, 65.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Quebradillas Limestone Formation, Middle Miocene (16.0 - 11.6 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

• ENVIRONMENT: Shallow carbonate setting.
• SPECIFIC LITHOLOGY: Limestone. 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 80287: 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
 Thraciida - Thraciidae
"Cyathodonta reedsi" = Thracia (Cyathodonta)
"Cyathodonta reedsi" = Thracia (Cyathodonta) clam
 Cardiida - Cardiidae
"Cardium (Laevicardium) serratum" = Laevicardium serratum
"Cardium (Laevicardium) serratum" = Laevicardium serratum Linnaeus 1758 cockle
 Pholadida - Teredinidae
"Teredo incrassata" = Kuphus incrassatus
"Teredo incrassata" = Kuphus incrassatus Gabb 1873 clam
 Lucinida - Lucinidae
"Lucinisca hoveyi" = Lucina (Lucinisca), "Phacoides (Here) quebradillicus" = Here
"Lucinisca hoveyi" = Lucina (Lucinisca) clam
"Phacoides (Here) quebradillicus" = Here clam
Gastropoda
 Opisthobranchia - Haminoeidae
"Haminea granosa" = Haminoea
"Haminea granosa" = Haminoea snail
 Neogastropoda - Cancellariidae
Cancellaria sp. Lamarck 1799 snail
 Neogastropoda - Olividae
"Olivella muticoides" = Olivella (Olivella) muticoides
"Olivella muticoides" = Olivella (Olivella) muticoides Gabb 1873 olive snail
 Neogastropoda - Drilliidae
"Drillia consors" = Hindsiclava consors
"Drillia consors" = Hindsiclava consors Sowerby 1850 snail
 Sorbeoconcha - Xenophoridae
Xenophora conchyliophora Born 1780 carrier shell