Tres Lagunas, 4th fossiliferous horizon, Mojon de Hierro Formation, Chubut (Carboniferous to of Argentina)

Where: Argentina (43.7° S, 70.7° W: paleocoordinates 56.7° S, 81.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Costatumulus amosi brachiopod zone, Mojon de Hierro Formation (Tepuel Group), Bashkirian to Bashkirian (323.2 - 307.0 Ma)

• 4th fossiliferous horizon. Costatumulus amosi zone.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone and lithified conglomerate

• The Mojon de Hierro Formation consists of sandstones with some conglomerates and black shales.

Size class: macrofossils

Preservation: cast

Primary reference: C. R. Gonzalez. 2006. Lower Permian bivalves from central Patagonia, Argentina. Paläontologische Zeitschrift 80(2):130-155 [W. Kiessling/U. Merkel/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64405: authorized by Wolfgang Kiessling, entered by Uta Merkel on 08.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

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Strophomenata
 Productida - Monticuliferidae
Costatumulus amosi
Costatumulus amosi Taboada 1998
Rhynchonellata
 Spiriferida - Trigonotretidae
Neospirifer ? leoncitensis
Gastropoda
 Murchisoniina - Gosseletinidae
Peruvispira sueroi
Peruvispira sueroi Sabattini and Noirat 1969 snail
Bivalvia
 Cardiidia - Sanguinolitidae
Sanguinolites sp., Sueroa andreisi
Sanguinolites sp. M'Coy 1844 clam
 Trigoniida - Schizodidae
Schizodus sp.
Schizodus sp. King 1844 clam
 Arcida - Parallelodontidae
? Parallelodon quichaurensis n. sp.
 Pectinida - Euchondriidae
Euchondria sabattiniae
 Pectinida - Streblochondriidae
? Streblochondria sp.
? Streblochondria sp. Newell 1938 scallop
 Myalinida - Atomodesmatidae
"Atomodesminae indet." = Atomodesmatinae
"Atomodesminae indet." = Atomodesmatinae Waterhouse 1976 clam
 Nuculanida - Malletiidae
Palaeoneilo sp.
Palaeoneilo sp. Hall and Whitfield 1869 clam