Sua, Ecuador, Santiago Facies (Olsson, 1964) (Miocene of Ecuador)

Where: Esmeraldas, Ecuador (0.9° N, 79.9° W: paleocoordinates 0.3° S, 75.8° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Santiago Facies Group, Early/Lower Miocene (23.0 - 16.0 Ma)

• no additional information provided

• formation-level stratigraphic resolution

Environment/lithology: marginal marine; lithified, coarse-grained, pebbly, brown sandstone

• Hard to soft, generally coarse-grained, brown sandstones, which sometimes are pebbly or with thin beds of conglomerate, grading into sandy shales. The more massive layers are often strongly crossbedded and the formation in this zone of outcrop is faulted repeatedly. Some layers are concretionary.

Size class: macrofossils

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

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 60753: authorized by Arnold Miller, entered by Kate Bulinski on 22.05.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• only a few taxa noted from this locality. not likely to be the complete fauna
Bivalvia
 Arcida - Arcidae
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
small species
 Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758 mussel
large species
 Cardiida - Veneridae
"Dosinia (Dosinidia) sua" = Dosinia
"Dosinia (Dosinidia) sua" = Dosinia venus clam
new species
 Cardiida - Cardiidae
"Lophocardium gurabicum" = Nemocardium (Lophocardium) gurabica
"Lophocardium gurabicum" = Nemocardium (Lophocardium) gurabica Maury 1917 cockle
 Lucinida - Lucinidae
Lucina (Phacoides) pacifica Olsson 1964 clam
new species
Gastropoda
 Neogastropoda - Melongenidae
Melongena cf. consors Sowerby 1850 snail
 Sorbeoconcha - Campanilidae
Thericium sp. Monterosato 1809 snail
 Sorbeoconcha - Potamididae
 Sorbeoconcha - Turritellidae
"Turritella altilira" = Turritella (Bactrospira) altilira
"Turritella altilira" = Turritella (Bactrospira) altilira Conrad 1857 turret shell