ammonites
Purmamarca river Cecioni 1965 locality (Ordovician of Argentina)

Also known as La Ciénaga, Jujuy Province, Argentina

Where: Jujuy, Argentina (23.7° S, 65.5° W: paleocoordinates 43.1° S, 129.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Sepulturas Formation, Floian (478.6 - 471.8 Ma)

Environment/lithology: offshore shelf; lithified, shelly/skeletal packstone and lithified, silty sandstone

• "Cephalopods, as well as trilobites, bivalves and brachiopods, are found in the tempestites formed by such storms (Astini and Waisfeld 1993)"

•"inner shelf sediments deposited below fair-weather wave-base, periodically affected by storm events. Cephalopods, as well as trilobites, bivalves and brachiopods, are found in the tempestites formed by such storms (Astini and Waisfeld 1993)."

Size class: macrofossils

Preservation: recrystallized, original aragonite, replaced with calcite

Primary reference: M. Cichowolski. 2009. A review of the endocerid cephalopod Protocyptendoceras from the Floian (Lower Ordovician)of the Eastern Cordillera, Argentina. Acta Palaeontologica Polonica 54(1):99-109 [B. Kröger/B. Kröger] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87793: authorized by Björn Kröger, entered by Björn Kröger on 24.03.2009