Cercado de Mao - Bluff No. 2 [Cercado Fm]: Tortonian, Dominican Republic

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Cerithiidae
Gastropoda - Turritellidae
Landau and Marques da Silva 2010
Gastropoda - Ampullinidae
Amauropsis guppyi (Gabb 1873)
Gastropoda - Neotaenioglossa - Calyptraeidae
Gastropoda - Tonnidae
Malea camura Guppy 1866
Gastropoda - Cassidae
Cassis sulcifera Sowerby 1850
Gastropoda - Neogastropoda - Cancellariidae
Jung and Petit 1990
    = Cancellaria sp. Lamarck 1799
Landau et al. 2012
Gastropoda - Neogastropoda - Turridae
Turris albida (Perry 1811)
    = Pleurotoma barretti Guppy 1866
Hendy et al. 2008
Gastropoda - Neogastropoda - Conidae
Conus furvoides Gabb 1873
Gastropoda - Neogastropoda - Terebridae
Terebra spirifera (Dall 1895)
Gastropoda - Neogastropoda - Mangeliidae
Cythara elongata (Gabb 1873)
Cythara gibba Guppy 1896
Gastropoda - Neogastropoda - Drilliidae
Gastropoda - Neogastropoda - Muricidae
Murex cornurectus Guppy 1876
Gastropoda - Neogastropoda - Olividae
    = Oliva giraudi Cossmann 1913
Landau and Marques da Silva 2010
Gastropoda - Neogastropoda - Fasciolariidae
Gastropoda - Neogastropoda - Nassariidae
Gastropoda - Neogastropoda - Buccinidae
Gastropoda - Rissoidae
Rissoina sagraiana (d'Orbigny 1842)
Gastropoda - Naticidae
Polinices subclausa (Sowerby 1850)
Natica sulcata Born 1778
Natica youngi Maury 1917
Gastropoda - Neritidae
Neritina viridemaris (Maury 1917)
Gastropoda - Phasianellidae
Gastropoda - Turbinidae
Gastropoda - Opisthobranchiata - Cylichnidae
Listed as "Acteocina triticum-tritonis"
Gastropoda - Opisthobranchiata - Retusidae
Bivalvia - Carditida - Carditidae
Weisbord 1929
Bivalvia - Carditida - Crassatellidae
Crassinella guppyi (Dall 1896)
Bivalvia - Pholadida - Corbulidae
Corbula vieta Guppy 1866
Bivalvia - Cardiida - Veneridae
Chione cf. walli (Guppy 1866)
Chione woodwardi (Guppy 1866)
Bivalvia - Cardiida - Cardiidae
Cardium haitense Sowerby 1850
Bivalvia - Cardiida - Semelidae
Semele claytoni Maury 1917
Bivalvia - Pandorida - Pandoridae
Bivalvia - Lucinida - Lucinidae
Bivalvia - Mytilida - Crenellidae
Crenella divaricata (d'Orbigny 1853)
Bivalvia - Pectinida - Pectinidae
Pecten excentricus (Gabb 1873)
Pecten cercadica Maury 1917
Bivalvia - Pectinida - Anomiidae
Anomia simplex d'Orbigny 1845
Bivalvia - Ostreida - Pteriidae
Pteria inornata (Gabb 1873)
Bivalvia - Arcida - Glycymerididae
Glycymeris acuticostata (Sowerby 1849)
Bivalvia - Arcida - Arcidae
Bivalvia - Nuculanida - Nuculanidae
Leda peltella Dall 1903
Scaphopoda - Gadilida - Gadilidae
Cadulus phenax Pilsbry and Sharp 1898
Scaphopoda - Dentaliida - Dentaliidae
see common names

Geography
Country:Dominican Republic
Coordinates: 19.5° North, 71.1° West (view map)
Paleocoordinates:20.3° North, 68.8° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Miocene
Stage: Tortonian 10 m.y. bin: Cenozoic 6
Key time interval: Tortonian
Age range of interval: 11.63 - 7.246 m.y. ago
Age estimate: 7.6 Ma (age-depth)
Stratigraphy
Formation:Cercado
Stratigraphic resolution:group of beds
Stratigraphy comments: 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.
Lithology and environment
Primary lithology:blue poorly lithified claystone
Includes fossils?Y
Lithology description: Blue clays with layers formed of masses of foraminifera which appears like fine gravel.
Environment:offshore
Geology comments: No paleoenvironmental data reported by Maury.
Taphonomy
Modes of preservation:body,original aragonite
Size of fossils:macrofossils
Preservation of anatomical detail:good
Temporal resolution:time-averaged
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:PRI
Collection method comments: Collections reposited at Cornell University and now reside at PRI.
Taxonomic list comments:Exhaustive for poorly resolved section. Identifications to species level, though antiquated genus-level nomenclature.
Metadata
Database number:58816
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:M. Clapham Research group:marine invertebrate
Created:2006-02-24 19:29:44 Last modified:2025-02-22 15:12:02
Access level:the public Released:2006-02-24 19:29:44
Creative Commons license:CC0
Reference information

Primary reference:
16689. C. J. Maury. 1917. Santo Domingo type sections and fossils. Bulletins of American Paleontology 5(30):1-43 [A. Miller/A. Hendy]

Secondary references:

19909 A. J. W. Hendy, D. P. Buick, K. V. Bulinski, C. A. Ferguson, and A. I. Miller. 2008. Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions. [A. Hendy/A. Hendy/A. Hendy]
43555 P. Jung and R. E. Petit. 1990. Neogene paleontology in the northern Dominican Republic, 10. The family Cancellariidae (Mollusca: Gastropoda). Bulletins of American Paleontology 98(334):87-144 [A. Hendy/A. Hendy]
36423 B. Landau and C. Marques da Silva. 2010. Early Pliocene gastropods of Cubagua, Venezuela: Taxonomy, palaeobiogeography and ecostratigraphy. Palaeontos 19:1-221 [A. Hendy/A. Hendy]
43469 B. D. Landau, R. E. Petit, and C. M. Silva. 2012. The family Cancellariidae (Mollusca: Gastropoda) in the Neogene of the Bocas del Toro region, Panama, with the description of seven new species. Journal of Paleontology 86(2):311-339 [A. Hendy/A. Hendy]
17428 N. E. Weisbord. 1929. Miocene Mollusca of Northern Colombia. Bulletin of American Paleontology 14(54):1-310 [A. Miller/A. Hendy/O. Alfaro]