LS 28. Los Sombreros section, western Argentina (Cambrian of Argentina)

Where: Mendoza, Argentina (32.0° S, 69.0° W: paleocoordinates 42.0° S, 125.5° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Los Sombreros Formation, St Davids (509.0 - 497.0 Ma)

• Allochthonous boulder within Ordovician sediments, yielded only conodonts of Cordylodus proavus BIozone

Environment/lithology: slope; shelly/skeletal wackestone and silty shale

• Huge olistolith consisting of wackestones with trilobites, thin-bedded dark mudstones ans silty shales. Also containing hexactine and stauractine spicules.

Collection methods: All figured brachiopods are deposited in the collections of Catedra de Estratigrafia y Geologia Historica, Universidad Nacional de Cordoba/Argentina (CEHG-UNC 15975-16045).

Primary reference: L. E. Holmer, L. Popov, and O. Lehnert. 1999. Cambrian phosphatic brachiopods from the Precordillera of western Argentina. GFF 121:227-242 [A. McGowan/A. McGowan]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 55944: authorized by Alistair McGowan, entered by Alistair McGowan on 09.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Lingulata
 Lingulida - Obolidae
Obolidae indet.
Obolidae indet. King 1846
 Acrotretida - Curticiidae
Curticia sp.
Curticia sp. Walcott 1905
 Acrotretida - Acrotretidae
Prototreta cf. mimica
Paterinata
 Paterinida - Paterinidae
Micromitra sp.
Micromitra sp. Meek 1873