Arroyo Verde Fm (Eocene of Argentina)

Where: Argentina (45.1° S, 71.1° W: paleocoordinates 47.6° S, 61.4° W)

• outcrop-level geographic resolution

When: Arroyo Verde Fm Formation, Middle Eocene (47.8 - 37.7 Ma)

• STRATIGRAPHIC RELATIONS: From Arroyo Verde Fm. Stratigraphic relations not figured in paper, and text is in spanish. THICKNESS: Unknown thickness of unit. AGE: Middle Eocene, although dating of unit on the basis of Campanile species also found in Lutetian of Paris Basin is highly dubious. May be younger (Late Eocene?). STRATIGRAPHIC POSITION: Unknown position within formation.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified limestone

• ENVIRONMENT: Environment not reported in text. Likely to be coastal marine setting.
• SPECIFIC LITHOLOGY: Manganesiferous limestone. LITHIFICATION: Lithified on the basis of facies description and figured specimens.

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTOR: Note clear as manuscript is in spanish. Appears to be collected by J. Oliveri and N. Rossi (1957-59). REPOSITORY: Museo de Mineralogía y Geológico Nacional.

Primary reference: E. Rossi de Garcia and R. Levy. 1959. Nuevos moluscos Terciaros del Arroyo Verde (Provincia de Río Negro, Argentina). Ameghiniana 1(4):9-15 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 71616: authorized by Austin Hendy, entered by Austin Hendy on 01.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Appears limited, but includes both bivalves and gastropods. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature.
Show authors, comments, and common names
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
 Sorbeoconcha - Campanilidae
Campanile aff. benecki
 Sorbeoconcha - Tornidae
Teinostoma "sp. A", Teinostoma "sp. B"
Teinostoma "sp. A" Adams and Adams 1853 snail
Teinostoma "sp. B" Adams and Adams 1853 snail
 Sorbeoconcha - Naticidae
Natica sp.
Natica sp. Scopoli 1777 moon snail
 Neogastropoda - Terebridae
Terebra laudata
Terebra laudata Rossi de Garcia and Levy 1959 auger snail
 Cerithioidea - Turritellidae
Turritella sp., Turritella pseudohauthalli
Turritella sp. Lamarck 1799 turret shell
Turritella pseudohauthalli Rossi de Garcia and Levy 1977 turret shell
 Trochoidea - Trochidae
Calliostoma sp., Calliostoma negroensis
Calliostoma sp. Swainson 1840 top snail
Calliostoma negroensis Rossi de Garcia and Levy 1959 top snail
Bivalvia
 Ostreida - Malleidae
Isognomon sp., Isognomon valvanoi
Isognomon sp. Lightfoot 1786 oyster
Isognomon valvanoi Rossi de Garcia and Levy 1977 oyster
 Pectinida - Limidae
"Acesta (Plicacesta) sp." = Plicacesta, Lima sp.
"Acesta (Plicacesta) sp." = Plicacesta Vokes 1963 file clam
Lima sp. Bruguière 1797 file clam
 Carditida - Carditidae
Venericardia camachoi
Venericardia camachoi Rossi de Garcia and Levy 1959 clam
 Lucinida - Lucinidae
Callucina glauca
Callucina glauca Rossi de Garcia and Levy 1959 clam