Portezuelo de Pedernales, Atacama - F. disciforme Zone (Jurassic of Chile)

Where: Chile (26.3° S, 69.3° W: paleocoordinates 26.6° S, 32.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Fanninoceras disciforme ammonoid zone, Margaritatus (189.6 - 183.0 Ma)

• horizon with Reynesoceras americanum

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithology not reported

Size class: macrofossils

Preservation: mold/impression, original calcite, replaced with silica

Collection methods: mechanical, acetic,

• collected since 1966

Primary reference: E. Pérez, M. Aberhan, R. Reyes and A. Hillebrandt. 2008. Early Jurassic Bivalvia of northern Chile. Part III. Order Trigonioida. Beringeria 39:51-102 [M. Aberhan/S. Nurnberg/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 95086: authorized by Martin Aberhan, entered by Sabine Nürnberg on 06.04.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• trigonioids only
Bivalvia
 Trigoniida - Myophorelloidae
Frenguelliella tapiai Lambert 1944 clam