Tereso Horizon, Werfen Fm, Tereso, Dolomites (Permian of Italy)

Where: Italy (46.4° N, 11.9° E: paleocoordinates 4.5° N, 25.3° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Tereso Horizon Member (Werfen Formation), Changhsingian (254.2 - 252.2 Ma)

• Tereso Horizon is the basal unit of the Werfen Formation, and contains the P-T boundary in its upper part.

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; ooidal grainstone and packstone

Size classes: macrofossils, mesofossils, microfossils

Primary reference: C. B. Neri, M. Pasini, and R. Posenato. 1986. The Permian/Triassic boundary and the Early Scythian sequence - Tereso section, Dolomites. Permian and Permian-Triassic Boundary in the South-Alpine Segement of the Western Tethys - IGCP Project No. 203 111-116 [D. Bottjer/C. Powers/C. Jamet]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 44450: authorized by David Bottjer, entered by Catherine Powers on 12.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Nodosariata
 Nodosariida - Nodosariidae
Nodosaria sp. Lamarck 1812
Dentalina sp. d'Orbigny 1826
Foraminifera
 Lagenina - Robuloididae
  -
 Ammodiscoidea - Ammodiscidae
Glomospira sp. Rzehak 1895
Tubothalamea
 Miliolida - Cornuspiridae
Hemigordius sp. Schubert 1908
Foraminifera
 Fusulinina - Earlandiidae
 Fusulinoidea - Boultoniidae
 Palaeotextularoidea - Biseriamminidae
 Fusulinina - Geinitzinidae
 Fusulinina - Pachyphloiidae
Pachyphloia sp. Lange 1925
Gastropoda
 Bellerophontida - Euphemitidae
"Bellerophon cf. vaceki" = Warthia vaceki
"Bellerophon cf. vaceki" = Warthia vaceki Bittner 1899 snail
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
 Ostreida - Bakevelliidae
Towapteria cf. scythica Wirth 1936 oyster
Strophomenata
 Orthotetida - Meekellidae
Ombonia sp. Caneva 1906
 Productida -
Rhynchonellata
 Spiriferida - Ambocoeliidae
"Crurithyris extima" = Orbicoelia extima
"Crurithyris extima" = Orbicoelia extima Grant 1970
 Athyridida - Athyrididae
? Araxathyris sp. Grunt 1965
Polychaeta
 Sabellida - Serpulidae
"Spirorbis" sp. Daudin 1800
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Echinoidea
 Cidaroida - Miocidaridae
Miocidaris sp. Döderlein 1887 pencil urchin