Loc. 6 - Stokes Island [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 Covacevich & Frassinetti

Collection methods: surface (in situ),

• COLLECTOR: Presumably V. Covacevich and D. Frassinetti. R, prior to 1980. REPOSITORY: SGO.

Primary reference: V. Covacevich and D. Frassinetti. 1986. El genero Cancellaria en el Mioceno de Chile con descripcion de cuatro especies nuevas (Gaastropoda: Cancellariidae). Revista Geológica de Chile 28-29:33-67 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78526: authorized by Austin Hendy, entered by Austin Hendy on 07.02.2008, edited by Damián Perez

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.
Bivalvia
 Nuculanida - Nuculanidae
"Nuculana (Poroleda) sp." = Poroleda
"Nuculana (Poroleda) sp." = Poroleda Hutton 1893 pointed nut clam
 Ostreida - Pinnidae
Pinna sp. Linnaeus 1758 oyster
 Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778 clam
 Arcida - Cucullaeidae
Cucullaea chilensis Philippi 1887 clam
 Hiatellida - Hiatellidae
Panopea sp. Menard 1807 clam
 Cardiida - Cardiidae
"Cardium multiradiatum" = Trachycardium multiradiatum, Cardium sp.
"Cardium multiradiatum" = Trachycardium multiradiatum Sowerby 1846 cockle
Cardium sp. Linnaeus 1758 cockle
 Cardiida - Tellinidae
Tellina sp. Linnaeus 1758 tellin clam
 Cardiida - Mactridae
Mactra sp. Linnaeus 1767 clam
 Cardiida - Veneridae
Chione sp. von Mühlfield 1811 venus clam
Ameghinomya volckmanni Philippi 1887 venus clam
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Gastropoda
 Opisthobranchia - Cylichnidae
Scaphander sp. Monfort 1810 snail
 Opisthobranchia - Bullidae
"Bulla" sp. Linnaeus 1758 snail
 Neogastropoda - Columbariidae
? Columbarium sp. von Martens 1881 snail
 Neogastropoda - Volutidae
"Proscaphella vidali" = Miomelon, "Proscaphella sp." = Miomelon
"Proscaphella vidali" = Miomelon volute
"Proscaphella sp." = Miomelon Dall 1907 volute
 Neogastropoda - Cancellariidae
Cancellaria medinae Philippi 1887 snail
 Neogastropoda - Olividae
Lamprodomina dimidiata Sowerby 1846 olive snail
 Neogastropoda - Nassariidae
"Fusus" sp. Bruguière 1789 snail
 Neogastropoda - Buccinidae
Pseudoliva cepa true whelk
 Sorbeoconcha - Cassidae
Semicassis monilifera Sowerby 1846 snail
 Sorbeoconcha - Naticidae
"Natica" striolata Sowerby 1846 moon snail
Sinum subglobosus Sowerby 1846 moon snail
Neverita sp. Risso 1826 moon snail
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
 Trochoidea - Trochidae
Trochus cf. poeppigii Philippi 1887 top snail
Echinoidea
 Spatangoida - Schizasteridae
"Schizaster" sp. Agassiz 1835 heart urchin