MACN Gran Barranca 1 (Eocene of Argentina)

Where: Chubut, Argentina (42.9° S, 71.3° W: paleocoordinates 45.4° S, 61.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Sarmiento Formation, Mustersan (48.0 - 42.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; volcaniclastic sediments

• Gastropods are found in paleosols and massive pyroclastic mudstones

Size classes: macrofossils, mesofossils

Primary reference: S. E. Miquel and E. S. Bellosi. 2010. Middle Eocene - Oligocene gastropods of the Sarmiento Formation, central Patagonia. In R. H. Madden, A. A. Carlini, M. G. Vucetich and R. F. Kay (eds.), The Paleontology of Gran Barranca [J. Sessa/L. Eccles/L. Eccles]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 105837: authorized by Jocelyn Sessa, entered by Laurie Eccles on 26.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
  -
Bulimus lutescens
Bulimus lutescens King and Broderip 1831 snail
 Stylommatophora - Charopidae
Gyrocochlea sp., Stephadiscus sp., Colhueconus simpsoni, Rotadiscus sp., Lilloiconcha sp., Stephanoda ? mazzonii, Zilchogyra "sp. A", Zilchogyra "sp. B", Radiodiscus sp.
Gyrocochlea sp. Hedley 1924 slug
cf. Gyrocochlea ? mirablilis
Stephadiscus sp. Hylton Scott 1981 slug
cf. Stephadiscus celinae
Colhueconus simpsoni Miquel and Bellosi 2010 slug
Rotadiscus sp. Pilsbry 1926 slug
cf. Rotadiscus amancaezensis
Lilloiconcha sp. Weyrauch 1965 slug
cf. Lilloiconcha gordurasensis
Stephanoda ? mazzonii Miquel and Bellosi 2004 slug
Zilchogyra "sp. A" Weyrauch 1965 slug
Zilchogyra "sp. B" Weyrauch 1965 slug
Radiodiscus sp. Pilsbry 1906 slug
cf. Radiodiscus riochicoensis
 Stylommatophora - Odontostomidae
"Helix dentata" = Plagiodontes dentatus
"Helix dentata" = Plagiodontes dentatus Wood 1828 slug