Sta. 130 - 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 80244: authorized by Austin Hendy, entered by Austin Hendy on 09.04.2008

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.
 Arcida - Arcidae
"Arca (Scapharca) guajatica" = Anadara (Hawaiarca) guajatica
"Arca (Scapharca) guajatica" = Anadara (Hawaiarca) guajatica Sheldon and Maury 1920 clam
 Arcida - Glycymerididae
"Glycymeris acuticostata" = Tucetona acuticostata
"Glycymeris acuticostata" = Tucetona acuticostata Sowerby 1849 clam
 Cardiida - Veneridae
"Antigona tarquinia" = Periglypta tarquinia
"Antigona tarquinia" = Periglypta tarquinia Dall 1900 venus clam
 Cardiida - Tellinidae
Florimetis chipolana2 Dall 1900 tellin clam
 Cephalaspidea - Haminoeidae
"Haminea granosa" = Haminoea
"Haminea granosa" = Haminoea snail
 Neogastropoda - Cancellariidae
"Cancellaria (Pyruclia) portoricana" = Pyruclia1
"Cancellaria (Pyruclia) portoricana" = Pyruclia1 snail
 Neogastropoda - Mitridae
Mitra henekeni Sowerby 1850 mitre shell
 Neogastropoda - Muricidae
"Murex messorius" = Vokesimurex messorius
"Murex messorius" = Vokesimurex messorius Sowerby 1841 murex snail
 Calyptraeoidea - Calyptraeidae
Calyptraea centralis Conrad 1841 slipper shell