Arroyo Piedra Azul, Bed BM6, Sierra Pillahuinco (Permian of Argentina)

Where: Argentina (38.1° S, 61.7° W: paleocoordinates 52.8° S, 54.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bonete Formation (Pillahuinco Group), Sakmarian (293.5 - 290.1 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray shale

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Department of Geology, University of Buenos Aires (CPBA)

Primary reference: H. J. Harrington. 1955. The Permian Eurydesma fauna of eastern Argentina. Journal of Paleontology 29(1):112-128 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91637: authorized by Linda Ivany, entered by Linda Ivany on 09.10.2009, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pholadomyida - Edmondiidae
Allorisma inflectoventris n. sp. Harrington 1955 clam
 Cardiidia - Sanguinolitidae
"Stutchburia argentinensis n. sp." = Myonia argentinensis
"Stutchburia argentinensis n. sp." = Myonia argentinensis Harrington 1955 clam
 Myalinida - Atomodesmatidae
Aphanaia orbirugata n. sp. Harrington 1955 clam
 Pectinida - Heteropectinidae
Heteropecten sp.2 Kegel and Costa 1951 scallop
 Pectinida - Deltopectinidae
Deltopecten harringtoni n. sp.3 Rocha-Campos and de Carvalho 1975 scallop
 Ostreida - Pterineidae
"Liopteria dutoiti" = Leptodesma (Leiopteria) dutoiti
"Liopteria dutoiti" = Leptodesma (Leiopteria) dutoiti Harrington 1955 oyster
Rhynchonellata
 Spiriferida - Ingelarellidae
Tomiopsis harringtoni n. sp.1 Archbold and Thomas 1986
Strophomenata
 Strophomenida - Rugosochonetidae
"Chonetes pillahuincensis n. sp." = Tivertonia pillahuincensis
"Chonetes pillahuincensis n. sp." = Tivertonia pillahuincensis Harrington 1955