Cerro Castillo - Man Aike Fm (Eocene of Argentina)

Where: Argentina (50.2° S, 70.8° W: paleocoordinates 52.7° S, 61.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Man Aike Formation, Middle Eocene (48.6 - 37.2 Ma)

• STRATIGRAPHIC RELATIONS: From the Man Aike Fm, which regionall unconformably overlies the Late Cretaeous Calafate Formation. THICKNESS: From several beds within 12 m section. AGE: Stated to be Middle Eocene according to Malumián (1990) and Concheyro (1991) on the basis of foraminifera and nanofossils, respectively. Correlatable to upper part of the Rio Turbio. Placed in Middle Eocene pending revised age. STRATIGRAPHIC POSITION: From beds near base of section.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, fine-grained, medium sandstone

• SPECIFIC LITHOLOGY: Parallel laminated and massive fine-medium sandstone. LITHIFICATION: Lithified on the basis of taphonomy.

Size class: macrofossils

Preservation: cast, mold/impression

Collection methods: surface (in situ),

• COLLECTORS: Presumably the authors, H. H. Camacho, J. O. Chiesa, S. G. Parama and C. J. del Rio (c. 1990's). REPOSITORY: CIRGEO, Centro de Investigaciones en Recursos Geológicos, Buenos Aires, Argentina.

Primary reference: H. H. Camacho, J. O. Chiesa, S. G. Parma and C. J. Rio. 2000. Invertebrado marinos eocenos de los cerros Palique y Castillo, subdoeste de la provincia de Santa Cruz, Argentina. Ameghiniana 37(1):59-72 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 71613: authorized by Austin Hendy, entered by Austin Hendy on 01.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for brachiopoda, bivalvia and gastropoda. NOMENCLATURE: Modern nomenclature with subgenus and species-level assignments.
Gastropoda
 Neotaenioglossa - Calyptraeidae
Sigapatella americana Ortmann 1900 slipper shell
Calyptraea sp. Lamarck 1799 slipper shell
 Sorbeoconcha - Struthiolariidae
Bivalvia
 Lucinida - Lucinidae
"Lucina" sp. Bruguière 1797 clam
 Cardiida - Veneridae
"Chione" sp. von Mühlfield 1811 venus clam
 Hiatellida - Hiatellidae
Panopea sp. Menard 1807 clam
 Carditida - Carditidae
"Venericardia elegantoides" = Pleuromeris elegantoides
"Venericardia elegantoides" = Pleuromeris elegantoides Ortman 1902 clam
 Nuculanida - Nuculanidae
"Nuculana" sp. Link 1807 pointed nut clam
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium giganteum Sowerby 1846 tusk shell
Rhynchonellata
 Terebratulida - Bouchardiidae
Bouchardia zitteli Ihering 1897