Rio Hatillo Formation, region of Pueblo Viejo, Cordillera (Cretaceous of Dominican Republic)

Where: Dominican Republic (19.2° N, 70.7° W: paleocoordinates 19.2° N, 70.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Douvilleiceras mammillatum ammonoid zone, Rio Hatillo Formation, Early/Lower Albian (112.0 - 109.0 Ma)

• lower part of the Río Hatillo Fomation; Mammillatum Zone; Late Lower Albian age

• group of beds-level stratigraphic resolution

Environment/lithology: shoreface; lithified siliciclastic sediments

• The Río Hatillo Formation was deposited in a shallow, near-shore environment as part of the Cretaceous Volcanic Arc sections.
• The Río Hatillo Formation includes a basal conglomerate, sandstones and calcareous sandstones covered by massive biogenic limestone. The fauna assemblage described herein was collected from the clastic rocks within the lower part of Río Hatillo Formation by N. Russell.

Size class: macrofossils

Preservation: mold/impression

Collection methods: The invertebrates herein described were collected by N. Russell, identified by the senior author and are housed in the paleontologic collection of the National Museum of Natural History in Havana, Cuba (MNHNCu).

Primary reference: R. Myczynski and M. Iturralde-Vinent. 2005. The Late Lower Albian Invertebrate Fauna of the Río Hatillo Formation of Pueblo Viejo, Dominican Republic. Caribbean Journal of Science 41(4):782-796 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 65128: authorized by Martin Aberhan, entered by Sabine Nürnberg on 19.09.2006, edited by John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

• The fauna is composed by: ammonites (~54.5%), belemnites (~27.3%), gastropods (~2.3%), bivalves (~4.5%), brachiopods (~2.3%) and echinoderms (~9.1%).
Show authors, comments, and common names
Rhynchonellata
 Terebratulida - Kingenidae
Kingena sp.
Kingena sp. Davidson 1852
Gastropoda
 Cerithioidea - Cerithiidae
Cerithium cf. heeri
Cerithium cf. heeri cerith snail
Cephalopoda
 Belemnitida - Belemnopseidae
Neohibolites cf. minimus
 Phylloceratida - Phylloceratidae
Phylloceras (Hypophylloceras) cf. seresitense
 Ammonitida - Douvilleiceratidae
Douvilleiceras cf. mammillatum
Douvilleiceras cf. mammillatum Schlotheim 1813 ammonite
 Ammonitida - Protetragonitidae
Protetragonites aelosus
Protetragonites aelosus ammonite
P. aelosus aelosus
 Ammonitida - Tetragonitidae
Tetragonites cf. nautiloides, "Tetragonites cf. rectangularis" = Tetragonites timotheanus rectangularis, "Kossmatella (Kossmatella) romana" = Kossmatella romana
Tetragonites cf. nautiloides Pictet 1848 ammonite
"Tetragonites cf. rectangularis" = Tetragonites timotheanus rectangularis Wiedmann 1962 ammonite
"Kossmatella (Kossmatella) romana" = Kossmatella romana Wiedmann 1962 ammonite
 Ammonitida - Beudanticeratidae
Beudanticeras cf. laevigatum
Bivalvia
 Cardiida - Arcticidae
Venilicardia sp.
Venilicardia sp. Stoliczka 1870 clam
count unclear
 Ostreida - Ostreidae
"Ostrea cf. ameghinoi" = Cubitostrea ameghinoi
"Ostrea cf. ameghinoi" = Cubitostrea ameghinoi Ihering 1907 oyster
O. cf. ameghinoi rocana
Echinoidea
 Salenioida - Hyposaleniidae
Hyposalenia sp.
Hyposalenia sp. Desor 1858 sea urchin
possibly two specimens instead
 Holasteroida - Holasteridae
Holaster sp.
Holaster sp. Agassiz 1836 sea urchin
possibly two specimens instead
 Holectypoida - Holectypidae
? Holectypus sp.
? Holectypus sp. sea urchin
possibly two specimens instead