Locality R, Venezuela - Weisbord (1964) (Pliocene of Venezuela)

Also known as Locality R

Where: Sucre, Venezuela (10.0° N, 64.0° W: paleocoordinates 9.9° N, 63.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Maiqueta Member (Playa Grande Formation), Early/Lower Pliocene (5.3 - 3.6 Ma)

• The Playa Grande Formation consists of a variegated assemblage of rocks and atarts at the base with a brown conglomerate. It attains a maximum thickness of 65 ft at its type locality. The deposit is lenticular lying with a pronounced unconformity on the Las Pailas Formatiion. The Maiqueta Member is exposed south of the Bruscas Fault. The Playa Grande and Mare formations of the Cabo Blanco Group are believed to be early Pliocene in age, and the Guaiguaza clay late Pliocene.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified, brown, gray siltstone and brown, gray shale

• Beds were laid down in shallow marine waters
• The Maiqueta Member consists of an assemblage of shales, siltstones, sandstones and congglomerates. The rocks are generally drab gray and dull tan in color.

Size class: macrofossils

Preservation: original aragonite

Reposited in the PRI

Collection methods: quarrying,

• Collected by Weisbord in 1955 and 1956. Collections also held at Flordia State University

Primary reference: N. E. Weisbord. 1964. Late Cenozoic scaphopods and serpulid polychaets from northern Venezuela. Bulletins of American Paleontology 47(214):111-199 [A. Miller/A. Hendy/O. Alfaro]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 41551: authorized by Austin Hendy, entered by Austin Hendy on 16.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for mollusca, and serpulids
Scaphopoda
 Dentaliida - Fustiariidae
 Gadilida - Gadilidae
"Cadulus (Gadila) bruscasensis" = Gadila
"Cadulus (Gadila) bruscasensis" = Gadila tusk shell
Gastropoda
 Heterostropha - Pyramidellidae
"Pyrgiscus facetus" = Turbonilla (Pyrgiscus)1, "Pyrgiscus bruscasensis" = Turbonilla (Pyrgiscus)1
"Pyrgiscus facetus" = Turbonilla (Pyrgiscus)1 snail
"Pyrgiscus bruscasensis" = Turbonilla (Pyrgiscus)1 snail
 Heterostropha - Architectonicidae
Architectonica nobilis1 Röding 1798 sundial
 Trochoidea - Phasianellidae
 Opisthobranchia - Retusidae
 Cerithioidea - Turritellidae
Turritella maiquetana1 turret shell
 Neotaenioglossa - Calyptraeidae
"Crepidula (Bostrycapulus) aculeata" = Bostrycapulus aculeatus1
"Crepidula (Bostrycapulus) aculeata" = Bostrycapulus aculeatus1 Gmelin 1791 slipper shell
Subspecies: Crepidula (Bostrycapulus) aculeata venezuelana
 Neogastropoda - Columbellidae
"Strombina caboblanquensis" = Strombina (Strombina) pumilio1
"Strombina caboblanquensis" = Strombina (Strombina) pumilio1 Reeve 1858 snail
 Neogastropoda - Fasciolariidae
 Neogastropoda - Mangeliidae
 Neogastropoda - Conidae
Conus (Leptoconus) jaspideus1 Gmelin 1791 cone shell
 Neogastropoda - Olividae
"Oliva (Ispidula) schepmani" = Oliva (Ispidula) tisiphona1 Duclos 1844 olive snail
 Neogastropoda - Cystiscidae
"Persicula (Gibberula) lavalleeana" = Gibberula1, "Persicula (Rabicea) interruptelinata" = Persicula1
"Persicula (Gibberula) lavalleeana" = Gibberula1 snail
"Persicula (Rabicea) interruptelinata" = Persicula1 snail
 Sorbeoconcha - Personidae
Distorsio (Rhysema) clathrata1 Lamarck 1816 snail
Bivalvia
 Nuculanida - Nuculanidae
Nuculana (Saccella) karlmartini2 Weisbord 1964 pointed nut clam
 Mytilida - Crenellidae
"Crenella divaricata" = Crenella decussata2
"Crenella divaricata" = Crenella decussata2 Montagu 1808 clam
 Pectinida - Pectinoidae
"Chlamys (Argopecten) gibbus" = Argopecten gibbus2
"Chlamys (Argopecten) gibbus" = Argopecten gibbus2 Linnaeus 1758 calico scallop
 Pectinida - Plicatulidae
 Ostreida - Flemingostreidae
"Ostrea (? Agerostrea) antecursor" = Agerostrea2
"Ostrea (? Agerostrea) antecursor" = Agerostrea2 oyster
 Arcida - Arcidae
 Cardiida - Solecurtidae
 Cardiida - Tellinidae
Tellina (Eurytellina) alternata2 Say 1822 tellin clam
Tellina (Eurytellina) nitens2 Adams 1845 tellin clam
 Cardiida - Veneridae
"Dosinia (Dosinidia) concentrica" = Dosinia (Dosinia) concentrica2 Born 1778 venus clam
Macrocallista maculata2 Linnaeus 1758 venus clam
 Pholadida - Corbulidae
 Lucinida - Lucinidae
"Lucina (Parvilucina) ephraimi" = Parvilucina2, "Lucina (Parvilucina) multilineata" = Parvilucina multistriata2, "Lucina (? Callucina) sp." = Callucina2
"Lucina (Parvilucina) ephraimi" = Parvilucina2 clam
"Lucina (Parvilucina) multilineata" = Parvilucina multistriata2 Conrad 1841 clam
"Lucina (? Callucina) sp." = Callucina2 Dall 1901 clam