Cercado de Mao - Bluff No. 2 [Cercado Fm] (Miocene of Dominican Republic)

Where: Dominican Republic (19.5° N, 71.1° W: paleocoordinates 19.4° N, 70.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cercado Formation, Tortonian (11.6 - 7.2 Ma)

• STRATIGRAPHIC RELATIONS: From the Cercado Formation, which unconformably overlies the Baitoa Formation, and is unconformably overlain by the Cercado Formation. AGE: Late Miocene, based on Table 1 of Saunders et al. (1986); late Miocene according to Jung (1994, p. 260); direct date from Cheetham et al. (1999). STRATIGRAPHIC POSITION: Bluff approximately 200 ft thick.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, blue claystone

• No paleoenvironmental data reported by Maury.
• Blue clays with layers formed of masses of foraminifera which appears like fine gravel.

Size class: macrofossils

Preservation: original aragonite

Reposited in the PRI

Collection methods: quarrying,

• Collections reposited at Cornell University and now reside at PRI.

Primary reference: C. J. Maury. 1917. Santo Domingo type sections and fossils. Bulletins of American Paleontology 5(30):1-43 [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 58816: authorized by Austin Hendy, entered by Austin Hendy on 24.02.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for poorly resolved section. Identifications to species level, though antiquated genus-level nomenclature.
 Dentaliida - Dentaliidae
 Gadilida - Gadilidae
"Cadulus phenax" = Cadulus (Gadila) phenax Pilsbry and Sharp 1898 tusk shell
 Trochoidea - Phasianellidae
 Trochoidea - Turbinidae
"Turbo dominicensis" = Turbo (Taeniaturbo) dominicensis
"Turbo dominicensis" = Turbo (Taeniaturbo) dominicensis Gabb 1873 snail
 Neritoidea - Neritidae
"Neritina viridemaris" = Smaragdia (Smaragdia) viridis viridemaris Maury 1917 snail
 Neogastropoda - Olividae
Oliva giraudi2 Cossmann 1913 olive snail
"Olivella muticoides" = Olivella (Olivella) muticoides Gabb 1873 olive snail
 Neogastropoda - Muricidae
"Murex cornurectus" = Chicoreus (Triplex) cornurectus
"Murex cornurectus" = Chicoreus (Triplex) cornurectus Guppy 1876 murex snail
 Neogastropoda - Buccinidae
Phos gabbi true whelk
 Neogastropoda - Nassariidae
"Alectrion cercadensis" = Nassarius (Uzita) cercadensis
"Alectrion cercadensis" = Nassarius (Uzita) cercadensis Maury 1917 snail
 Neogastropoda - Fasciolariidae
"Latirus fusiformis" = Latirus (Polygona) fusiformis
"Latirus fusiformis" = Latirus (Polygona) fusiformis Gabb 1873 snail
 Neogastropoda - Cancellariidae
"Cancellaria islacolonis" = Aphera islacolonis, Cancellaria sp.3
"Cancellaria islacolonis" = Aphera islacolonis Maury 1917 snail
Cancellaria sp.3 Lamarck 1799 snail
 Neogastropoda - Mangeliidae
"Cythara elongata" = Ithycythara elongata, "Cythara gibba" = Brachycythara gibba, Mangilia lalonis
"Cythara elongata" = Ithycythara elongata Gabb 1873 snail
"Cythara gibba" = Brachycythara gibba Guppy 1896 snail
Mangilia lalonis Maury 1917 snail
 Neogastropoda - Drilliidae
 Neogastropoda - Turridae
"Pleurotoma barretti" = Polystira barretti1
"Pleurotoma barretti" = Polystira barretti1 Guppy 1866 turrid
 Neogastropoda - Conidae
Conus furvoides Gabb 1873 cone shell
 Neogastropoda - Terebridae
"Terebra spirifera" = Strioterebrum spiriferum
"Terebra spirifera" = Strioterebrum spiriferum Dall 1895 auger snail
 Sorbeoconcha - Cassidae
Cassis sulcifera Sowerby 1850 snail
 Sorbeoconcha - Tonnidae
Malea camura Guppy 1866 tun shell
 Sorbeoconcha - Rissoidae
Rissoina sagraiana d'Orbigny 1842 snail
 Sorbeoconcha - Naticidae
"Polinices subclausa" = Polinices hepaticus, Natica youngi, "Natica sulcata" = Stigmaulax sulcata
"Polinices subclausa" = Polinices hepaticus Röding 1798 moon snail
Natica youngi Maury 1917 moon snail
"Natica sulcata" = Stigmaulax sulcata Born 1778 moon snail
 Architaenioglossa - Ampullinidae
"Amauropsis guppyi" = Pachycrommium guppyi
"Amauropsis guppyi" = Pachycrommium guppyi Gabb 1873 snail
 Neotaenioglossa - Calyptraeidae
 Cerithioidea - Turritellidae
Turritella mauryae2 turret shell
 Cerithioidea - Cerithiidae
 Opisthobranchia - Retusidae
"Volvula cylindrica" = Volvulella (Volvulella) oxytata
"Volvula cylindrica" = Volvulella (Volvulella) oxytata Bush 1885 snail
 Opisthobranchia - Cylichnidae
Acteocina triticum barrel-bubble
Listed as "Acteocina triticum-tritonis"
 Carditida - Carditidae
"Venericardia dominica" = Glyptoactis (Glyptoactis) dominica4
"Venericardia dominica" = Glyptoactis (Glyptoactis) dominica4 Weisbord 1929 clam
 Carditida - Crassatellidae
Crassinella guppyi Dall 1896 clam
 Pandorida - Pandoridae
"Pandora inconspicua" = Pandora (Pandorella) inconspicua
"Pandora inconspicua" = Pandora (Pandorella) inconspicua Gabb 1873 clam
 Pholadida - Corbulidae
"Corbula vieta" = Varicorbula vieta
"Corbula vieta" = Varicorbula vieta Guppy 1866 clam
 Cardiida - Semelidae
Semele claytoni Maury 1917 clam
 Cardiida - Cardiidae
"Cardium venustum" = Laevicardium venustulum, "Cardium dominicanum" = Trachycardium (Mexicardia) dominicanum, "Cardium haitense" = Trigoniocardia (Trigoniocardia) haitensis
"Cardium venustum" = Laevicardium venustulum Gabb 1873 cockle
"Cardium dominicanum" = Trachycardium (Mexicardia) dominicanum Dall 1900 cockle
"Cardium haitense" = Trigoniocardia (Trigoniocardia) haitensis Sowerby 1850 cockle
 Cardiida - Veneridae
"Chione woodwardi" = Chionopsis woodwardi Guppy 1866 venus clam
Chione cf. walli Guppy 1866 venus clam
 Lucinida - Lucinidae
"Phacoides domingensis" = Phacoides pectinatus domingensis, "Miltha smithwoodwardi" = Miltha chipolana
"Phacoides domingensis" = Phacoides pectinatus domingensis Dall 1890 clam
"Miltha smithwoodwardi" = Miltha chipolana Dall 1903 clam
 Arcida - Glycymerididae
"Glycymeris acuticostata" = Tucetona acuticostata
"Glycymeris acuticostata" = Tucetona acuticostata Sowerby 1849 clam
 Arcida - Arcidae
"Scapharca henekeni" = Anadara (Sectiarca) henekeni, "Scapharca arthurpennelli" = Lunarca arthurpennelli, "Scapharca corcupidonis" = Anadara (Cunearca) corcupidonis, "Arca yaquensis" = Arca (Arca) yaquensis, "Scapharca cibaoica" = Anadara (Hawaiarca) cibaoica
"Scapharca henekeni" = Anadara (Sectiarca) henekeni Maury 1917 ark
"Scapharca arthurpennelli" = Lunarca arthurpennelli Maury 1917 ark
"Scapharca corcupidonis" = Anadara (Cunearca) corcupidonis Maury 1917 ark
"Arca yaquensis" = Arca (Arca) yaquensis Maury 1917 ark
"Scapharca cibaoica" = Anadara (Hawaiarca) cibaoica Maury 1917 clam
 Ostreida - Pteriidae
Pteria inornata Gabb 1873 pearl oyster
 Pectinida - Anomiidae
Anomia simplex d'Orbigny 1845 jingle
 Pectinida - Pectinoidae
"Pecten cercadica" = Antillipecten cercadicus, "Pecten excentricus" = Argopecten eccentricus
"Pecten cercadica" = Antillipecten cercadicus Maury 1917 scallop
"Pecten excentricus" = Argopecten eccentricus Gabb 1873 calico scallop
 Mytilida - Crenellidae
"Crenella divaricata" = Crenella decussata
"Crenella divaricata" = Crenella decussata Montagu 1808 clam
 Nuculanida - Nuculanidae
"Leda peltella" = Saccella peltella
"Leda peltella" = Saccella peltella Dall 1903 pointed nut clam