Rio Amina, between Hato Viejo and Potrero (Pliocene of Dominican Republic)

Where: Dominican Republic (19.5° N, 70.9° W: paleocoordinates 19.5° N, 70.5° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Gurabo Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• List from several bluffs of claystone. From unknown formation at the time of publication (Possibly Cercado, Gurabo or Mao). On the basis of faunal similarity this is correlated to Bluff #1 on Rio Mao and Zones A-F on Rio Gurabo, which more recent work suggested is Gurabo Fm.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, blue claystone

• No paleoenvironmental data reported by Maury.
• Hard, light blue clays.

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 58873: authorized by Austin Hendy, entered by Austin Hendy on 27.02.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Identifications to species level, though antiquated genus-level nomenclature.
Gastropoda
 Sorbeoconcha - Bursidae
Bursa amphitrites Maury 1917 frog shell
 Neogastropoda - Marginellidae
"Marginella amina" = Prunum amina, "Marginella domingoensis" = Prunum domingoense
"Marginella amina" = Prunum amina Dall 1896 margin shell
"Marginella domingoensis" = Prunum domingoense Dall 1896 margin shell
 Neogastropoda - Volutidae
"Lyria pulchella" = Lyria (Lyria) pulchella
"Lyria pulchella" = Lyria (Lyria) pulchella Sowerby 1850 volute
 Neogastropoda - Nassariidae
"Phos fasciolatus" = Pallacera guadelupensis
"Phos fasciolatus" = Pallacera guadelupensis Petit 1852 snail
 Neogastropoda - Buccinidae
Phos gabbi, "Phos elegans" = Antillophos elegans
Phos gabbi true whelk
"Phos elegans" = Antillophos elegans Guppy 1866 true whelk
 Neogastropoda - Columbellidae
Strombinella acuformis Dall 1896 snail
 Neogastropoda - Drilliidae
"Drillia venusta" = Clathrodrillia venusta
"Drillia venusta" = Clathrodrillia venusta Sowerby 1850 snail
 Neogastropoda - Turridae
"Turris albida" = Polystira albida
"Turris albida" = Polystira albida Perry 1811 turrid
 Neogastropoda - Terebridae
"Terebra cirrus" = Terebra (Strioterebrum) cirrus Dall 1895 auger snail
Terebra amitra Dall 1895 auger snail
"Terebra haitensis" = Terebra (Oreoterebra) haitensis Dall 1895 auger snail
Terebra oligomitra Dall 1895 auger snail
"Terebra gabbi" = Terebra (Paraterebra) gabbi Dall 1895 auger snail
 Neogastropoda - Cancellariidae
"Cancellaria rowelli" = Cancellaria (Cancellaria) rowelli
"Cancellaria rowelli" = Cancellaria (Cancellaria) rowelli Dall 1896 snail
 Opisthobranchia - Cylichnidae
"Acteocina ovumlacerti" = Cylichnella ovumlacerti
"Acteocina ovumlacerti" = Cylichnella ovumlacerti Guppy 1874 snail
Bivalvia
 Pectinida - Pectinoidae
"Pecten hatoviejonis" = Argopecten thetidis, "Pecten eugrammatus" = Argopecten thetidis
"Pecten hatoviejonis" = Argopecten thetidis Sowerby 1850 calico scallop
"Pecten eugrammatus" = Argopecten thetidis Sowerby 1850 calico scallop
 Arcida - Limopsidae
Limopsis ovalis Gabb 1873 clam
Limopsis hatoviejonis Maury 1917 clam
 Arcida - Glycymerididae
"Glycymeris acuticostata" = Tucetona acuticostata
"Glycymeris acuticostata" = Tucetona acuticostata Sowerby 1849 clam
 Arcida - Arcidae
Scapharca tolepia Dall 1898 ark
 Cardiida - Cardiidae
"Cardium aminense" = Trigoniocardia (Trigoniocardia) aminensis Dall 1900 cockle