Cerro Solitario, Empozada Form., Mendoza, Argentina - Tortello and Bordonaro 199 (Cambrian of Argentina)

Where: Mendoza, Argentina (32.9° S, 68.8° W: paleocoordinates 41.2° S, 126.1° W)

• outcrop-level geographic resolution

When: L. laevigata zone, Empozada Formation, Middle Cambrian (513.0 - 501.0 Ma)

• JA: laevigata zone is late Middle Cambrian according to Gradstein et al. 2004

• formation-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified limestone and lithified shale

• general: isolated, predominantly carbonate blocks (olistoliths). Thinly bedded limestone and black shale.

Collection methods: Revisions of the Carlos Rusconi collections in the Museum of Natural Sciences of Mendoza, Argentina. Includes only agnostid trilobites.

Primary reference: M. F. Tortello and O. L. Bordonaro. 1997. Cambrian Agnostid trilobites from Mendoza, Argentina: A systematic revision and biostratigraphic implications. Journal of Paleontology 71(1):74-86 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9811: authorized by John Alroy, entered by Phil Borkow on 22.01.2001, edited by John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Agnostida - Clavagnostidae
Clavagnostus calensis Rusconi 1950 trilobite
Clavagnostus repandus Westergard 1930 trilobite
 Agnostida - Agnostidae
Kormagnostus seclusus Walcott 1884 trilobite
 Agnostida - Diplagnostidae
Diplagnostus planicauda Angelin 1851 trilobite
 Agnostida - Spinagnostidae
Tomagnostella exsculpta Angelin 1851 trilobite
 Agnostida - Ptychagnostidae
Ptychagnostus aculeatus Angelin 1851 trilobite
(2 cephalons, 1 pygidium, frags)
"Lejopyge laevigata" = Lejopyge laevigatus Dalman 1828 trilobite
(13 cephala, 7 pygidia)