Trapiche Fm., Puesto el Salto and Cerro Potrerillos, Argentina (Ordovician of Argentina)

Where: Argentina (30.0° S, 69.0° W: paleocoordinates 34.4° S, 134.6° W)

• local area-level geographic resolution

When: Trapiche Formation, Hirnantian (445.2 - 443.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: submarine fan; lithified, calcareous sandstone and shale

• turbidite sandstone within shale and occasionally calcitic shale

Collection methods: JA: marked by Novack-Gottshall without explanation as omitting some genera, some macrofossils, some microfossils, and species names, but apparently complete

Primary reference: T. M. Sanchez. 1990. Una fauna de bivalvos en la Formacion Santa Gertrudis (Ordovicico) de la Provincia de Salta (Argentina). Ameghiniana 23(3-4):131-139 [A. Miller/P. Novack-Gottshall/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 8890: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 02.09.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Scyphozoa
 Conulariida - Conulariidae
Conularia sp. jellyfish
Bivalvia
 Myalinida - Ambonychiidae
Cleionychia sp. Ulrich 1892 clam
 Modiomorphida - Modiomorphidae
? Colpomya sp. Ulrich 1893 clam
Modiolopsis sp. Hall 1847 clam
Strophomenata
 Strophomenida - Furcitellidae
"Cyphomena sp." = Dactylogonia
"Cyphomena sp." = Dactylogonia Ulrich and Cooper 1942
 Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
 Strophomenida - Strophomenidae
? Holtedahlina sp. Foerste 1924
Rhynchonellata
 Orthida - Dalmanellidae
Dalmanella sp. Hall and Clarke 1892
 Orthida - Harknessellidae
Reuschella sp. Bancroft 1928
Trilobita
 Phacopida - Homalonotidae
Calymenella sp. Bergeron 1890 trilobite
Pterobranchia
 Graptoloidea - Dicranograptidae
Dicellograptus sp. Hopkinson 1871 graptolite