San José [Cerro Dorotea Fm] (Paleocene of Argentina)

Where: Argentina (51.6° S, 72.3° W: paleocoordinates 54.0° S, 62.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cerro Dorotea Formation, Paleocene (66.0 - 56.0 Ma)

• LITHOSTRATIGRAPHY: From Formación Cerro Dorotea, which (?) overlies Formación Cazador and is overlain by Formación Rio Turbio. AGE: Paleocene. The authors consider to the fauna of contained gastropods in all these levels as of age probably Paleocene by their affinities to the Salamanca and Wangaloa formations. STRATIGRAPHIC POSITION: Composite list for formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; siliciclastic sediments

• LITHOLOGY: Unknown, siliciclastic. LITHIFICATION: Poorly-lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression

Collection methods: REPOSITORY: Not stated. COLLECTOR: Multiple collectors, possibly including Hünicken and Griffin.

Primary reference: C. del Rio. 2002. Molluscos del Terciario marino. Geología y Recursos Naturales de Santa Cruz 2(9):1-22 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99400: authorized by Austin Hendy, entered by Austin Hendy on 09.11.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for mollusca. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and species-resolution identifications.
Gastropoda
 Cerithioidea - Turritellidae
 Sorbeoconcha - Naticidae
 Sorbeoconcha - Struthiolariidae
 Neogastropoda - Tudiclidae
 Neogastropoda - Borsoniidae
 Neogastropoda - Fasciolariidae
Fusinus sp. Rafinesque 1815 snail
 Neogastropoda - Buccinidae
 Neogastropoda - Melongenidae
Fyfea sp. snail
 Sorbeoconcha - Capulidae
 Architaenioglossa - Ampullinidae
"Pseudamaura dubia" = Ampullina (Pseudamaura)
"Pseudamaura dubia" = Ampullina (Pseudamaura) snail
 Opisthobranchia - Cylichnidae
Scaphander sp. Monfort 1810 snail
 Opisthobranchia -
 Heterostropha - Acteonidae
  -