Quebrada Platanos [Esmeraldas Fm]: Early Pliocene, Ecuador

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda - Dentaliida - Dentaliidae
Gastropoda - Neogastropoda - Olividae
Oliva sp. Bruguière 1789
Gastropoda - Neogastropoda - Conidae
Gastropoda - Neogastropoda - Pseudomelatomidae
Gastropoda - Cassidae
new species
Bivalvia - Arcida - Arcidae
Anadara sp. Gray 1847
Bivalvia - Cardiida - Cardiidae
Microcardium sp. Thiele 1934
Bivalvia - Nuculanida - Nuculanidae
Nuculana sp. Link 1807
Anthozoa - Scleractinia - Flabellidae
Flabellum sp. Lesson 1831
see common names

Geography
Country:Ecuador State/province:Manabi
Coordinates: 0.8° South, 77.5° West (view map)
Paleocoordinates:0.5° South, 76.5° 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.
Lithology and environment
Primary lithology:tuffaceous lithified mudstone
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,some macrofossils
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:only some of the species are listed
Metadata
Database number:60770
Authorizer:A. Miller Enterer:K. Bulinski
Modifier:A. Hendy Research group:marine invertebrate
Created:2006-05-22 18:26:09 Last modified:2025-02-22 15:12:02
Access level:the public Released:2006-05-22 18:26:09
Creative Commons license:CC0
Reference information

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