Barda Negra sud, Neuquen, Argentina (Jurassic of Argentina)

Where: Argentina (39.2° S, 70.0° W: paleocoordinates 36.9° S, 30.8° 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

• formation-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 25417: 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
Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
Cephalopoda
 Ammonitida - Otoitidae
Emileia multiformis, Pseudotoites sphaeroceroides
 Ammonitida - Sonniniidae
Sonninia espinazitensis
Polychaeta
 Sabellida - Serpulidae
Serpulidae indet.
Serpulidae indet. Rafinesque 1835
Anthozoa
 Scleractinia - Actinastreidae
Araucanastrea minuscula n. gen. n. sp., Araucanastrea majuscula n. sp.
Araucanastrea minuscula n. gen. n. sp. Morsch 1996 stony coral
type species
Araucanastrea majuscula n. sp. Morsch 1996 stony coral
 Scleractinia - Guembelastraeidae
Garateastrea bardanegrensis n. gen. n. sp.
Garateastrea bardanegrensis n. gen. n. sp. Morsch 1996 stony coral
 Scleractinia - Columastreidae
"Pseudocoeniopsis cf. wintoni" = Eocolumastrea gortanii
"Pseudocoeniopsis cf. wintoni" = Eocolumastrea gortanii Prever 1909 stony coral
 Scleractinia - Montlivaltiidae
Cyathophylliopsis delabechei, Mapucheastrea andina, Complexastraeopsis sp., Neuquinosmilia gerthi n. sp.
Cyathophylliopsis delabechei Milne-Edwards and Haime 1851 stony coral
Mapucheastrea andina Morsch 1996 stony coral
Complexastraeopsis sp. Morycowa 1974 stony coral
Neuquinosmilia gerthi n. sp. Morsch 1996 stony coral
 Scleractinia - Haplaraeidae
Astraraea cf. fungiformis
Astraraea cf. fungiformis Beauvais 1979 stony coral
End corals
 Scleractinia - Kobyastraeidae
Kobyastraea louisae n. sp.
Kobyastraea louisae n. sp. Morsch 1996 stony coral