Upper Zorritas Formation, Chile (Carboniferous of Chile)

Where: Chile (24.5° S, 69.5° W: paleocoordinates 64.4° S, 76.8° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Zorritas Formation, Tournaisian (358.9 - 346.7 Ma)

• fossils collected from unnamed upper member of the Zorritas Formation

•collection is a composite of 2 sections near the towns of Zorritas and El Salto

• member-level stratigraphic resolution

Environment/lithology: deltaic; lithified sandstone and lithified shale

• depositional setting described as "high-stress environment in a clastic,nearshore setting" although in a table the infered paleoenvironment is categorized either as "delta platform distributary channels" or "interdistributary channels and prodeltas"
• fossils were collected from siliclastic distribuary channels and prodelta facies.

Size class: macrofossils

Preservation: mold/impression, trace

Reposited in the UNSM

Primary reference: P. E. Isaacson and J. T. Dutro. 1999. Lower Carboniferous brachiopods from Sierra de Almeida, northern Chile. Journal of Paleontology 73(4):625-633 [N. Heim/N. Heim/N. Heim]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 34753: authorized by Noel Heim, entered by Noel Heim on 22.09.2003, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Myalinida - Myalinidae
Posidoniella sp. Koninck 1885 clam
Gastropoda
 Bellerophontida -
Bellerophontoidea indet. M'Coy 1851 snail
Cephalopoda
 Goniatitida - Prionoceratidae
Imitoceras sp. Schindewolf 1923 ammonite
 Prolecanitida - Prolecanitidae
Eocanites sp. Librovitch 1957 ammonite
Strophomenata
 Orthotetida - Schuchertellidae
Rhynchonellata
 Spiriferinida - Syringothyrididae
 Rhynchonellida - Camarotoechiidae
"Paurorhyncha chavelensis" = Azurduya chavelensis
"Paurorhyncha chavelensis" = Azurduya chavelensis Amos 1958
Scyphozoa
 Conulariida - Conulariidae
 Ichnofossils -
Zoophycos sp. Massalongo 1855