Esmeraldas [Angostura Fm] (Miocene of Ecuador)

Where: Ecuador (1.0° N, 79.6° W: paleocoordinates 0.6° N, 78.0° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Angostura Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• LITHOSTRATIGRAPHY: From the Angostura Fm, which overlies the Viche Formation, and is overlain by the lower Onzole Formation. AGE: The Angostura Formation is Late Miocene age (planktic foraminiferal zone N. 16). It is apparently the Ecuadorian equivalent of the Gatun Formation of Panama. STRATIGRAPHIC POSITION: The formation is largely barren, but in a few places there are lenses or interbeds filled with finely preserved fossils.

• formation-level stratigraphic resolution

Environment/lithology: coastal; unlithified siliciclastic sediments

• Shallow water
• LITHOLOGY: Unknown, presumably siliciclastic lithology. LITHIFICATION: Unlithified, on the basis of figured specimens.

Size class: macrofossils

Collection methods: COLLECTORS: Unknown. REPOSITORY: Unknown.

Primary reference: W. P. Woodring. 1970. Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (gastropods: Eulimidae, Marginellidae to Helminthoglyptidae). United States Geological Survey Professional Paper 306(D):299-452 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96441: authorized by Austin Hendy, entered by Austin Hendy on 08.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Taxonomic list only contains species miscellaneously mentioned in text. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Bivalvia
 Arcida - Arcidae
 Arcida - Noetiidae
"Noetia (Noetia) reversa" = Noetia reversa7
"Noetia (Noetia) reversa" = Noetia reversa7 Sowerby 1833 clam
SUBSPECIES: Noetia (Noetia) reversa macdonaldi
 Pectinida - Pectinoidae
"Flabellipecten gatunensis" = Leopecten gatunensis8, "Leopecten gatunensis" = Leopecten gatunensis6
"Flabellipecten gatunensis" = Leopecten gatunensis8 Toula 1909 scallop
SUBSPECIES: Flabellipecten gatunensis gatunensis
"Leopecten gatunensis" = Leopecten gatunensis6 Toula 1909 scallop
 Mytilida - Mytilidae
"Crenella ecuadoriana" = Crenella decussata7
"Crenella ecuadoriana" = Crenella decussata7 Montagu 1808 mussel
SUBSPECIES: Crenella ecuadoriana santiaga
 Pholadida - Corbulidae
 Cardiida - Chamidae
Arcinella arcinella8 Linnaeus 1767 jewel box
 Cardiida - Kelliellidae
Alveinus rotundus8 Dall 1900 clam
 Cardiida - Veneridae
Lamelliconcha cora8 Brown and Pilsbry 1911 venus clam
 Cardiida - Semelidae
Semele laevis8 Sowerby 1833 clam
SUBSPECIES: Semele laevis costaricensis
 Cardiida - Cardiidae
Dinocardium sp.8 Dall 1900 cockle
 Lucinida - Lucinidae
Lucina (Lepilucina) gratis8 Olsson 1964 clam
Divaricella comis8 Olsson 1964 clam
Gastropoda
 Opisthobranchia - Cylichnidae
Acteocina bullata Kiener 1834 barrel-bubble
 Neogastropoda - Columbellidae
Sincola (Dorsina) pigea n. sp.2 Olsson 1964 snail
Sincola (Sincola) harbisonae1 Olsson 1964 snail
 Neogastropoda - Cancellariidae
"Cancellaria (Euclia) codazzii" = Euclia codazzii, Agatrix beatrix4
"Cancellaria (Euclia) codazzii" = Euclia codazzii Anderson 1929 snail
Agatrix beatrix4 Olsson 1964 nutmeg
 Neogastropoda - Muricidae
"Typhis (Talityphis) alatus" = Typhina alata5
"Typhis (Talityphis) alatus" = Typhina alata5 Sowerby 1850 murex snail
 Neogastropoda - Turridae
"Pleurofusia (Cruziturricula) fusinus" = Cruziturricula fusinus
"Pleurofusia (Cruziturricula) fusinus" = Cruziturricula fusinus Brown and Pilsbry 1911 turrid
 Neogastropoda - Conidae
Conus consobrinus Sowerby 1850 cone shell
Conus bravoi Spieker 1922 cone shell
 Neogastropoda - Terebridae
Strioterebrum indocayapum Olsson 1964 auger snail
Strioterebrum spiriferum Dall 1895 auger snail
Strioterebrum oresignum Olsson 1964 auger snail
Terebra (Oreoterebra) subsulcifera Brown and Pilsbry 1911 auger snail
 Sorbeoconcha - Turritellidae
Turritella abrupta Spieker 1922 turret shell
 Architectonicoidea - Architectonicidae
Architectonica nobilis3 Röding 1798 sundial