ammonites
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Cachoeira site, south of Vargem Grande do Sul (Oligocene of Brazil)

Where: Brazil (21.9° S, 46.9° W: paleocoordinates 22.2° S, 40.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tremembé Formation, Chattian (28.4 - 23.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, carbonaceous shale

• Taubaté basin, characterized by half-grabens and contains up to 1000 m of sediments cut by normal faults.
• Oil shale

Size class: macrofossils

Preservation: adpression

Collection methods: Repository: Universidade Estadual do Rio de Janeiro (UERJ)

Primary reference: R. G. Martins-Neto. 1989. Novos insetos terciários do estado de São Paulo. Revista Brasileira de Geociências 19:375-386 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 162188: authorized by Matthew Clapham, entered by Matthew Clapham on 19.09.2014

Creative Commons license: CC BY (attribution)