Cerro El Molle, Fm. La Laja (IANIGLA-PI) (Cambrian of Argentina)

Where: San Juan, Argentina (31.3° S, 68.6° W: paleocoordinates 44.1° S, 125.7° W)

When: La Laja Formation, Cambrian (538.8 - 485.4 Ma)

• Cambrian, Series 3, Stage 5

• member-level stratigraphic resolution

Environment/lithology: lithified, fine-grained, calcareous lime mudstone

Size class: mesofossils

Preservation: permineralized, replaced with calcite

Collected by O. L. Bordonaro y B. R.Pratt in 1994

Primary reference: B.R. Pratt and O.L. Bordonaro. 2014. Early Middle Cambrian Trilobites from La Laja Formation Cerro El Molle Precordillera of western Argentina. Journal of Paleontology, 88(5):906-924. [S. Devincenzi/S. Devincenzi/S. Devincenzi]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 200106: authorized by Susana Devincenzi, entered by Susana Devincenzi on 13.03.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ptychopariida -
Eokochaspis nodosa Sundberg and McCollum 2000 trilobite
Hadrocephalites sp. Sundberg and McCollum 2002 trilobite
Mexicella mexicana Lochman 1948 trilobite
 Ptychopariida - Ptychopariidae
Kochiella sp. Poulsen 1927 trilobite
Kochiella maxeyi Rasetti 1951 trilobite
 Ptychopariida - Alokistocaridae
Amecephalus arrojosensis Lochman 1952 trilobite