Aymamón Limestone (Miocene of Puerto Rico)

Also known as Quebradillas Limestone

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

• coordinate based on nearby landmark

• basin-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: From the Aymamón Limestone (=Quebradillas Limestone of older works), 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: List representative of formation

• formation-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

Collection methods: surface (in situ),

• COLLECTOR: Unknown. REPOSITORY: Unknown

Primary reference: H. E. Vokes and E. H. Vokes. 1968. Variation in the genus Orthaulax (Mollusca: Gastropoda). Tulane Studies in Geology and Paleontology 6(2):71-84 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92452: authorized by Austin Hendy, entered by Austin Hendy on 13.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: General list for Aymamón Limestone, but limited to taxa described in taxonomic publications. NOMENCLATURE: Authoritative publication, with species-level nomenclature, and modern nomenclature.
Gastropoda
 Opisthobranchia - Bullidae
 Neogastropoda - Drilliidae
"Crassispira (Hindsiclava) consors" = Hindsiclava consors2
"Crassispira (Hindsiclava) consors" = Hindsiclava consors2 Sowerby 1850 snail
 Neogastropoda - Muricidae
"Murex (Murex) messorius" = Vokesimurex messorius1, "Chicoreus (Chicoreus) cornurectus" = Chicoreus (Triplex) cornurectus1
"Murex (Murex) messorius" = Vokesimurex messorius1 Sowerby 1841 murex snail
Murex (Chicoreus) brevifrons in Woodring (1959)
"Chicoreus (Chicoreus) cornurectus" = Chicoreus (Triplex) cornurectus1 Guppy 1876 murex snail
Murex (Chicoreus) brevifrons in Woodring (1959)
 Sorbeoconcha - Thersiteidae
Orthaulax portoricoensis n. sp. Hubbard 1921 snail
Orthaulax aguadillensis Maury 1920 snail
Bivalvia
 Pectinida - Pectinoidae
"Aequipecten canalis" = Mimachlamys canalis4
"Aequipecten canalis" = Mimachlamys canalis4 Brown and Pilsbry 1913 scallop
 Arcida - Arcidae
Acar domingensis3, "Arca imbricata" = Lamarcka imbricata3
Acar domingensis3 Lamarck 1819 miniature ark
"Arca imbricata" = Lamarcka imbricata3 Bruguière 1789 clam