Los Pozones, Neuquen, Argentina (Jurassic of Argentina)

Where: Argentina (39.2° S, 70.1° W: paleocoordinates 36.9° S, 30.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Lajas Formation, Early/Lower Bajocian (171.6 - 168.4 Ma)

• Based on ammonites. Middle lower Bajocian

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; lithified, calcareous sandstone

Size class: macrofossils

Preservation: replaced with calcite

Collection methods: Study focussing on corals

Primary reference: S. M. Morsch. 1996. Les Scléractiniaires jurassiques (Bajocien) d'Argentine (Bassin de Neuquén). Systématique. Géobios 29(6):671-706 [W. Kiessling/W. Kiessling/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25416: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 12.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Only corals and ammonites used for age determination
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Gastropoda
  -
Gastropoda indet. Cuvier 1797 snail
Cephalopoda
 Ammonitida - Sonniniidae
 Ammonitida - Otoitidae
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
Anthozoa
 Scleractinia - Stylinidae
"Convexastrea" weaveri Gerth 1928 stony coral
 Scleractinia - Actinastreidae
"Actinastrea ramulifera" = Stephanastrea ramulifera
"Actinastrea ramulifera" = Stephanastrea ramulifera Etallon 1864 stony coral
listed as ?Stephanastrea ramulifera
 Scleractinia - Montlivaltiidae
Neuquinosmilia lospozonensis Morsch 1991 stony coral
Mapucheastrea andina n. gen. n. sp. Morsch 1996 stony coral
End corals
Montlivaltia aff. kobyi Beauvais 1966 stony coral