Sierra de Cajas Section. 20m (Cambrian of Argentina)

Where: Argentina (22.9° S, 66.6° W: paleocoordinates 46.7° S, 126.1° W)

When: Cordylodus proavus conodont zone, Lampazar Formation, Furongian (497.0 - 485.4 Ma)

• Lampazar overlies Padrioc Formation & underlies Cardonal. Parabolina (Neoparabolina) frequens argentina trilobite zone.

• bed-level stratigraphic resolution

Environment/lithology: marine; shale

• shale

Size class: macrofossils

Preservation: cast

Primary reference: M. F. Tortello. 2003. Biostratigraphic significance of the latest Cambrian-earliest Ordovician agnostoid trilobites from Northwestern Argentina. Geologica Acta 1(1):61-72 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 223798: authorized by Pete Wagner, entered by Pete Wagner on 30.11.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Olenida - Olenidae
Angelina hyeronimi Kayser 1876 trilobite
"Beltella ulrichi" = Leptoplastides ulrichi Kayser 1897 trilobite
Plicatolina scalpta Harrington and Leanza 1957 trilobite
Parabolinella coelatifrons Harrington and Leanza 1957 trilobite
 Ptychopariida - Shumardiidae
Shumardia erquensis Kobayashi 1937 trilobite
Artiopoda
 Agnostida - Diplagnostidae
 Agnostida - Agnostidae
Lotagnostus sp. Whitehouse 1936
Micragnostus vilonii Harrington and Leanza 1957
Gymnagnostus perinflatus Harrington and Leanza 1957
 Agnostida -
Leiagnostus turgidulus Harrington and Leanza 1957