Quebrada Camarones [Esmeraldas Fm]: Early Pliocene, Ecuador

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda - Dentaliida - Dentaliidae
Gastropoda - Neogastropoda - Cochlespiridae
Gastropoda - Naticidae
Bivalvia - Nuculanida - Nuculanidae
Nuculana (Saccella) ornata (d'Orbigny 1845)
Bivalvia - Nuculida - Nuculidae
Bivalvia - Arcida - Limopsidae
Bivalvia - Arcida - Arcidae
Bivalvia - Pectinida - Pectinidae
Chlamys woodringi n. sp. (Spieker 1922)
Bivalvia - Pectinida - Limidae
Bivalvia - Cardiida - Veneridae
Bivalvia - Cardiida - Tellinidae
Moerella meropsis (Dall 1900)
Bivalvia - Cardiida - Cardiidae
Bivalvia - Lucinida - Lucinidae
Bivalvia - Carditida - Crassatellidae
Bivalvia - Carditida - Astartidae
Gastropoda - Eucyclidae
Gastropoda - Lepetellida - Fissurellidae
Gastropoda - Trochidae
Calliostoma tegulum n. sp. Olsson 1964
Gastropoda - Epitoniidae
Scalina ferminiana (Dall 1908)
Cirsotrema togatum n. sp. (Hertlein and Strong 1951)
Pitt 1981 1 specimen
Gastropoda - Capulidae
Gastropoda - Naticidae
Gastropoda - Cassidae
Gastropoda - Xenophoridae
Gastropoda - Neogastropoda - Marginellidae
Gastropoda - Neogastropoda - Harpidae
Harpa americana n. sp. Pilsbry 1922
Pitt 1981 1 specimen
    = Harpa crenata Swainson 1822
Vokes 1984
Gastropoda - Neogastropoda - Volutidae
Gastropoda - Neogastropoda - Mitridae
Gastropoda - Neogastropoda - Buccinidae
Neosconsia ecuadoriana n. sp. Olsson 1964
Gastropoda - Neogastropoda - Nassariidae
Nassarius (Uzita) hylus n. sp. Olsson 1964
Gastropoda - Neogastropoda - Fasciolariidae
Gastropoda - Neogastropoda - Columbellidae
Gastropoda - Neogastropoda - Olividae
Gastropoda - Neogastropoda - Clathurellidae
Gastropoda - Neogastropoda - Conidae
Gastropoda - Neogastropoda - Turridae
Lepicythara camaronensis n. sp. Olsson 1964
Polystira oxytropis ecuadoriana n. ssp. Olsson 1964
Gastropoda - Neogastropoda - Cochlespiridae
Aforia ecuadoriana n. sp. Olsson 1964
Gastropoda - Neogastropoda - Raphitomidae
Gastropoda - Neogastropoda - Pseudomelatomidae
Hindsiclava militaris (Hinds, in Reeve 1843)
Gastropoda - Neogastropoda - Terebridae
Gastropoda - Neogastropoda - Drilliidae
Gastropoda - Neogastropoda - Cancellariidae
Gastropoda - Ficidae
Gastropoda - Turritellidae
Turritella sp. Lamarck 1799
Gastropoda - Opisthobranchiata - Cylichnidae
see common names

Geography
Country:Ecuador State/province:Manabi
Coordinates: 1.0° North, 79.6° West (view map)
Paleocoordinates:1.3° North, 78.5° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Pliocene
Stage: Zanclean 10 m.y. bin: Cenozoic 6
Key time interval: Early Pliocene
Age range of interval: 5.333 - 3.6 m.y. ago
Stratigraphy
Formation:Esmeraldas
Stratigraphic resolution:formation
Stratigraphy comments: AGE: Stated to be Late Miocene in text; Early Pliocene following Beu (2010). COMMENTS: thought to be equivalent to the Borbon formation of the Rio Santiago section, resting unconformably on top of conglomerate beds containing Turritella altilira and other Miocene fossils probably not greater than 300 meters in thickness overlain unconformably by massive to wellbedded brown sandstones

The beds at Quebrada Camarones have a low notherly to nearly horizontal dip, the cutbanks showing bare exposures sometimes rising as high as 30 feet
Lithology and environment
Primary lithology:fine,brown,yellow lithified sandstone
Secondary lithology: lithified sandstone
Includes fossils?Y
Lithology description: thin bedded to massive tuffaceous mudstones sometimes with interbeds of soft sandstones. small or medium-sized rounded pebbles are scattered throughout the formation, or more rarely concentrated into minor beds or seams of conglomerate. Large calcareous concretions, some rounded or with an irregular rootlike shape, generally with hollow centers are common at many places. The beds are highly foraminiferal, with pelagic types, often pure enough to form a foraminiferal oozelike sediment. On the fresh surface of the rock platform, the formation is hard, and of a gray-black or dark olive-green color.
Environment:marine indet.
Geology comments: deep water fauna with a few shallow water forms that were badly worn, indicating transportation, while deep-water fauna were in perfect condition, suggesting turbidity currents.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:all microfossils
Collection methods:surface (in situ),field collection
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:60771
Authorizer:A. Miller, A. Hendy Enterer:K. Bulinski, A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2006-05-22 19:02:30 Last modified:2025-02-22 15:12:02
Access level:the public Released:2006-05-22 19:02:30
Creative Commons license:CC0
Reference information

Primary reference:
17422. A. A. Olsson. 1964. Neogene Mollusks From Northwestern Ecuador [A. Miller/K. Bulinski]

Secondary references:

31283 W. D. Pitt. 1981. Two new gastropod occurrences in the Ecuadorian Neogene. Tulane Studies in Geology and Paleontology 16(3-4):155-156 [A. Hendy/A. Hendy]
31294 E. H. Vokes. 1984. The genus Harpa (Mollusca: Gastropoda) in the new world. Tulane Studies in Geology and Paleontology 18(1-2):53-60 [A. Hendy/A. Hendy]