Loc. 051083/2 [Navidad Formation] (Miocene of Chile)

Where: Chile (44.6° S, 74.6° W: paleocoordinates 45.6° S, 68.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Navidad Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Navidad Fm, for which lithostratigraphic relationships are not discussed (in english) in text. AGE: Early-Middle Miocene in text based on macrofossil biostratigraphy. Here, tentatively assigned to Early Miocene based on more recent published age estimates. STRATIGRAPHIC POSITION: From unknown position within Navidad Fm.

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified siliciclastic sediments

• ENVIRONMENT: Shallow marine, on the basis of faunal composition.
• SPECIFIC LITHOLOGY: Not stated in text, but presumably siliciclastic. LITHIFICATION: Unlithified, based on figured specimens.

Size class: macrofossils

Collected by Frassinetti in 1983, 1984

Collection methods: surface (in situ),

• COLLECTOR: Presumably D. Frassinetti, prior to 1980. REPOSITORY: Nacional de Historia Natural en Santiago de Chile.

Primary reference: D. Frassinetti. 2001. Molluscos bivalvos y gastrópodos del Mioceno marino de Isla Stokes, sur de Chile. Boletín del Museo Nacional de Historia Natural, Chile 50:73-90 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 79036: authorized by Austin Hendy, entered by Austin Hendy on 22.02.2008, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia and gastropoda. NOMENCLATURE: Authoritative publication, and with taxonomic assignments to species and subgenus resolution.
Gastropoda
 Sorbeoconcha - Naticidae
Sinum sublobosus moon snail
Neverita chiloensis Philippi 1887 moon snail
 Neogastropoda - Pseudolividae
Testallium cepa Sowerby 1846 snail
 Neogastropoda - Turridae
Gemmula sp. Weinkauff 1875 turrid
 Neogastropoda - Volutidae
"Alcithoe vidali" = Pachycymbiola vidali
"Alcithoe vidali" = Pachycymbiola vidali Philippi 1897 volute
 Neogastropoda - Olividae
Lamprodomina dimidiata Sowerby 1846 olive snail
 Neogastropoda - Cancellariidae
Cancellaria medinae Philippi 1887 snail
 Neogastropoda - Buccinidae
Austrofusus turbinelloides Sowerby 1846 true whelk
Penion darwinianus Philippi 1887 true whelk
 Sorbeoconcha - Cassidae
Semicassis monilifera Sowerby 1846 snail
 Opisthobranchia - Cylichnidae
Scaphander remondi Philippi 1887 snail
Scaphander brevicula Philippi 1887 snail
 Ptenoglossa -
Peonza benjamina Olivera 1994 snail
Bivalvia
 Arcida - Cucullaeidae
Cucullaea alta Sowerby 1846 clam
 Arcida - Glycymerididae
Glycymeris (Glycymeris) sp. da Costa 1778 clam
 Cardiida - Cardiidae
Trachycardium puelchum Sowerby 1846 cockle
 Cardiida - Veneridae
"Chione volckmanni" = Ameghinomya volckmanni
"Chione volckmanni" = Ameghinomya volckmanni Philippi 1887 venus clam
 Cardiida - Mactridae
Mactra sp. Linnaeus 1767 clam
Mactra pusilla Philippi 1887 clam
 Carditida - Crassatellidae
Tilicrassatella ponderosa Philippi 1887 clam