ammonites
Bed B - Los Pololos [Navidad Formation] (Miocene of Chile)

Where: Chile (33.9° S, 71.9° W: paleocoordinates 34.8° S, 66.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Navidad Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Navidad Fm, for which lithostratigraphic relationships are not discussed (in english) in text. AGE: Early-Middle Miocene in text based on macrofossil biostratigraphy. Here, tentatively assigned to Early Miocene based on basal position with formation. STRATIGRAPHIC POSITION: From lower part of Navidad Fm.

• bed-level stratigraphic resolution

Environment/lithology: coastal; shelly/skeletal siltstone

• ENVIRONMENT: Shallow marine, on the basis of faunal composition.
• SPECIFIC LITHOLOGY: Fossiliferous siltstone. LITHIFICATION: Unknown.

Size class: macrofossils

Collected by Covacevich & Frassinetti

Collection methods: surface (in situ),

• COLLECTOR: Presumably V. Covacevich and D. Frassinetti. R, prior to 1980. REPOSITORY: SGO.

Primary reference: D. Frassinetti and V. Covacevich. 1981. Architectonicidae en la Formacion Navidad, Mioceno, Chile central. Parte 1. Heliacinae (Mollusca: Gastropoda). Revista Geológica de Chile 13-14:35-47 [A. Hendy/A. Hendy/A. Hendy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78553: authorized by Austin Hendy, entered by Austin Hendy on 08.02.2008

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)