Progresso Formation (Miocene of Ecuador)

Where: Guayas, Ecuador (2.1° S, 80.5° W: paleocoordinates 2.9° S, 77.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Progreso Formation, Middle Miocene (16.0 - 11.6 Ma)

• LITHOSTRATIGRAPHU: From the Progresso Fm, which overlies the Subibaja Fm (Early Miocene). AGE: Middle Miocene. STRATIGRAPHIC POSITION: Composite list for formation.

• formation-level stratigraphic resolution

Environment/lithology: coastal; siliciclastic sediments

• LITHOLOGY: Unknown. LITHIFICATION: Unknown.

Size class: macrofossils

Collection methods: COLLECTORS: Unknown. REPOSITORY: Unknown.

Primary reference: W. P. Woodring. 1957. Geology and Paleontology of Canal Zone and adjoining parts of Panama. United States Geological Survey Professional Paper 306(A) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96516: authorized by Austin Hendy, entered by Austin Hendy on 10.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to taxa miscellaneously mentioned in text. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Bivalvia
 Pectinida - Pectinoidae
Lindapecten buchivacoanus1 Hodson et al. 1927 scallop
 Cardiida - Anatinellidae
Raeta undulata4 Gould 1851 clam
 Cardiida - Veneridae
Chione (Chionopsis) propinqua4 Spieker 1922 venus clam
Lamelliconcha cora4 Brown and Pilsbry 1911 venus clam
Gastropoda
 Neogastropoda - Conidae
Conus bravoi3 Spieker 1922 cone shell
 Cerithioidea - Turritellidae
Turritella gatunensis2 Conrad 1857 turret shell
Turritella abrupta2 Spieker 1922 turret shell
 Cerithioidea - Potamididae
Potamides suprasulcatus Gabb 1873 horn snail