TU 1378, Rio Gurabo [Cercado Fm] (Miocene of Dominican Republic)

Where: Dominican Republic (19.5° N, 71.2° W: paleocoordinates 19.4° N, 70.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: From Cercado Fm, which unconformably overlie Baitoa, and is overlain by the Gurabo Fm. AGE: Late Miocene, based on Table 1 of Saunders et al. (1986). THICKNESS: Formation is 150 m thick in this section. STRATIGRAPHIC POSITION: Unknown position within section.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified siliciclastic sediments

• ENVIRONMENT: Appearing to be shallow marine siliciclastic environment.
• SPECIFIC LITHOLOGY: Unknown, presumably silcicilastic. LITHIFICATION: Poorly lithified based on observation of figures.

Size class: macrofossils

Preservation: original aragonite, original calcite

Reposited in the PRI

Collection methods: bulk, sieve,

• COLLECTOR: E. Vokes. REPOSITORY: PRI. FIDELITY: Moderate ecological fidelity.

Primary reference: 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 Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions.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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 74935: authorized by Austin Hendy, entered by Austin Hendy on 06.09.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• TAXONOMY: Most taxa Identified by A. Hendy, with some earlier identifications by E. Vokes, P. Jung, H. Vokes, L. Anderson.
Gastropoda indet. Cuvier 1795 snail
 Neritoidea - Neritidae
Neritina figulopicta2 Maury 1917 snail
Neritina jungi2 Costa et al. 2001 snail
 Sorbeoconcha - Vermetidae
Petaloconchus sp. Lea 1843 worm shell
 Sorbeoconcha - Ficidae
Ficus gibsonsmithi1 Beu 2010 fig shell
 Neogastropoda - Melongenidae
Melongena consors Sowerby 1850 snail
 Neogastropoda - Buccinidae
Antillophos (Antillophos) sp. Woodring 1928 true whelk
 Neogastropoda - Fasciolariidae
Latirus sp. Monfort 1810 snail
 Neogastropoda - Columbellidae
Strombina sp. Mörch 1852 snail
 Neogastropoda - Cancellariidae
 Neogastropoda - Conidae
Conus planispira cone shell
 Sorbeoconcha - Naticidae
Polinices sp. Monfort 1810 moon snail
Stigmaulax cf. vererugosum Cossmann 1924 moon snail
 Neotaenioglossa - Calyptraeidae
Crucibulum sp. Schumacher 1817 slipper shell
 Heterostropha - Pyramidellidae
Bivalvia indet. Linnaeus 1758 clam
 Carditida - Carditidae
"Venericardia dominica" = Glyptoactis (Glyptoactis) dominica4
"Venericardia dominica" = Glyptoactis (Glyptoactis) dominica4 Weisbord 1929 clam
 Cardiida - Tellinidae
Tellinidae indet. Blainville 1814 tellin clam
"Eurytellina sp." = Tellina (Eurytellina) Fischer 1887 tellin clam
Macoma (Rexithaerus) sp. Conrad 1869 tellin clam
Strigilla (Strigilla) sp. Turton 1822 tellin clam
 Cardiida - Cardiidae
Laevicardium venustulum, "Laevicardium laevigatum" = Laevicardium serratum
Laevicardium venustulum Gabb 1873 cockle
"Laevicardium laevigatum" = Laevicardium serratum Linnaeus 1758 cockle
 Cardiida - Chamidae
Arcinella antiquata Guppy 1866 jewel box
Chama cf. macerophylla Gmelin 1791 jewel box
[entered as Chama macrophyla]
 Cardiida - Ungulinidae
 Cardiida - Mactridae
Mactridae indet. Lamarck 1809 clam
"Spisula" sp. Gray 1837 clam
 Cardiida - Veneridae
Lioconcha sp. Mörch 1853 venus clam
 Solenida - Pharidae
Ensis sp. Schumacher 1817 clam
 Lucinida - Lucinidae
"Miltha (Megaxinus) sp." = Megaxinus Brugnone 1880 clam
Codakia (Codakia) orbicularis Linnaeus 1758 clam
 Arcida - Arcidae
Anadara (Potiarca) sp. Iredale 1939 ark
Anadara (Cunearca) sp. Dall 1898 ark
 Ostreida - Ostreidae
Ostreidae indet. Rafinesque 1815 oyster
 Pectinida - Pectinoidae
Argopecten eccentricus3 Gabb 1873 calico scallop
Polyplacophora indet. de Blainville 1816 chiton