Sierra Dorotea [Cerro Dorotea Fm] (Paleocene of Argentina)

Where: Argentina (51.3° S, 72.3° W: paleocoordinates 53.7° 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 99258: authorized by Austin Hendy, entered by Austin Hendy on 03.11.2010

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.
unclassified
  -
Bivalvia
 Arcida - Cucullaeidae
 Pectinida - Limidae
"Lima (Acesta) snowhillensis" = Acesta
"Lima (Acesta) snowhillensis" = Acesta file clam
 Ostreida - Ostreidae
"Ostrea radiata" = Lopha radiata Lamarck 1819 oyster
 Carditida - Astartidae
 Carditida - Crassatellidae
"Crassatellites sp." = Crassatella
"Crassatellites sp." = Crassatella Lamarck 1799 clam
 Pholadida - Pholadidae
 Cardiida - Veneridae
Tapes sp. Mühlfeld 1811 venus clam
Meretrix rothi venus clam
Meretrix australis venus clam
 Cardiida - Lahillidae
 Hiatellida - Hiatellidae
"Panope cf. inferior" = Panopea, "Panope aff. simplex" = Panopea, "Panope pastorei" = Panopea, "Panope thomasi" = Panopea, "Panope prenucleus" = Panopea, "Panope sp." = Panopea
"Panope cf. inferior" = Panopea clam
"Panope aff. simplex" = Panopea clam
"Panope pastorei" = Panopea clam
"Panope thomasi" = Panopea clam
"Panope prenucleus" = Panopea clam
"Panope sp." = Panopea Menard 1807 clam
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
 Nuculida - Nuculidae
 Protobranchia -
"Malletia gracilis" = Australoneilo gracilis Wilckens 1905 clam
Gastropoda
  -
 Cephalaspidea - Bullidae
Bulla sp. Linnaeus 1758 snail
 Cephalaspidea - Retusidae
 Architaenioglossa - Ampullinidae
"Ampullospira dubia" = Ampullina (Ampullospira) snail
 Neogastropoda - Buccinidae
Cominella tumida true whelk
Austrocominella sp. Ihering 1907 true whelk
 Neogastropoda -
 Neogastropoda - Turridae
"Pleurotoma crassatina" = Turris
"Pleurotoma crassatina" = Turris turrid
 Stromboidea - Strombidae
"Fusus elegans" = Rostellaria (Fusus), "Fusus aff. dusenianus" = Rostellaria (Fusus)
"Fusus elegans" = Rostellaria (Fusus) true conch
"Fusus aff. dusenianus" = Rostellaria (Fusus) true conch
 Stromboidea - Struthiolariidae
 Stromboidea - Tylostomatidae
 Stromboidea - Aporrhaidae
 Naticoidea - Naticidae
 Calyptraeoidea - Calyptraeidae
Calyptraea sp. Lamarck 1799 slipper shell
 Sorbeoconcha - Turritellidae
 Heterostropha - Acteonidae
Scaphopoda
 Dentaliida - Dentaliidae