Onzole Formation (unspecified localities) (Pliocene of Ecuador)

Where: Esmeraldas, Ecuador (1.0° N, 79.7° W: paleocoordinates 0.7° N, 78.9° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Onzole Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• LITHOSTRATIGRAPHY: From the Onzole Fm, for which lithostratigraphic relationships are not discussed. AGE: Early Pliocene. STRATIGRAPHIC POSITION: Composite list for formation.

• formation-level stratigraphic resolution

Environment/lithology: coastal; lithology not reported

• Facies relations, paleontologic data and regional geologic setting sugggest sediment accumulation in a basin situated oceanward of the Pliocene trench-slope break.
• LITHOLOGY: Not reported in text. LITHIFICATION: Unknown.

Size class: macrofossils

Preservation: original aragonite

Collection methods: surface (float), surface (in situ),

• COLLECTOR: Unknown. REPOSITORY: Not stated in text.

Primary reference: B. Landau and C. Marques da Silva. 2010. Early Pliocene gastropods of Cubagua, Venezuela: Taxonomy, palaeobiogeography and ecostratigraphy. Palaeontos 19:1-221 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 111211: authorized by Austin Hendy, entered by Austin Hendy on 21.06.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to gastropods mentioned in text, bivalves not listed. NONENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Gastropoda
 Neogastropoda - Cancellariidae
"Charcolleria terryi" = Massyla terryi
"Charcolleria terryi" = Massyla terryi Olsson 1942 snail
 Neogastropoda - Harpidae
Harpa crenata Swainson 1822 snail
 Stromboidea - Strombidae
Persististrombus granulatus Swainson 1822 true conch
 Naticoidea - Naticidae
Polinices stanislasmeunieri Maury 1917 moon snail
 Cypraeoidea - Cypraeidae
Pseudozonaria cathyae Groves 1997 cowry
 Tonnoidea - Ranellidae
Monoplex amictus Reeve 1844 triton shell
Monoplex aquatilis Reeve 1844 triton shell
Monoplex vestitus Hinds 1844 triton shell
Monoplex wiegmanni Anton 1839 triton shell
 Tonnoidea - Personidae
Distorsio clathrata Lamarck 1816 snail
Distorsio decussata Valenciennes 1832 snail
 Tonnoidea - Tonnidae
Malea ringens Swainson 1822 tun shell
 Tonnoidea - Bursidae
Crossata ventricosa Broderip 1833 frog shell
Bursa rugosa Sowerby 1835 frog shell
 Tonnoidea - Cassidae
Dalium ecuadorianum Olsson 1942 snail
Cassis altispira Beu 2010 snail
Semicassis centiquadrata Valenciennes 1832 snail