Tres Lagunas, 5th 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: Mojon de Hierro Formation (Tepuel Group), Bashkirian to Bashkirian (323.2 - 307.0 Ma)

• 5th 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 64407: authorized by Wolfgang Kiessling, entered by Uta Merkel on 08.09.2006, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Productida - Monticuliferidae
Costatumulus amosi
Costatumulus amosi Taboada 1998
Rhynchonellata
 Spiriferida - Trigonotretidae
Neospirifer ? leoncitensis
Stenolaemata
 Cryptostomata - Fenestellidae
Fenestella sp.
Fenestella sp. Lonsdale 1839
Bivalvia
 Nuculanida - Malletiidae
Quadratonucula argentinensis, Palaeoneilo sp.
Palaeoneilo sp. Hall and Whitfield 1869 clam
 Nuculanida - Polidevciidae
Phestia sp., ? Phestia sp. n. sp.
Phestia sp. Chernyshev 1951 clam
? Phestia sp. n. sp. Chernyshev 1951 clam
 Nuculida - Nuculidae
? Nuculopsis sp.
? Nuculopsis sp. Girty 1912 nut clam
 Cardiida - Kalenteridae
"? Netschajewia sp." = Stutchburia
"? Netschajewia sp." = Stutchburia Etheridge 1900 clam
 Cardiidia - Sanguinolitidae
Praeundulomya moreli n. sp.
 Pectinida - Heteropectinidae
Etheripecten saraviae
Gastropoda
 Murchisoniina - Gosseletinidae
"Glabrocingulum argentinus" = Glabrocingulum (Stenozone) argentinus
"Glabrocingulum argentinus" = Glabrocingulum (Stenozone) argentinus Reed 1927 snail
 Euomphalina - Microdomatidae
Amaurotoma sp.
Amaurotoma sp. Knight 1945 snail
 Trochoidea - Araeonematidae
"Yunnania subpygmaea" = Yunnania pygmaeus
"Yunnania subpygmaea" = Yunnania pygmaeus de Koninck 1844 snail
al N. de Pto. Tres Lagunas, sierra de Tepuel
Cephalopoda
 Nautiloidea -
Sueroceras irregulare
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily