Torrente Meduna sample 3 (Miocene of Italy)

Also known as Chlamys praescabiuscula community sample 3

Where: Pordenone, Italy (46.2° N, 12.8° E: paleocoordinates 45.0° N, 12.0° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Preplans Sandstone Formation, Aquitanian (23.0 - 20.4 Ma)

• Miocene Torento-Meduna sequence unconformably overlies the Eocene Clauzetto Flysch (Flysch di Clauzetto) and is composed of Preplans Sandstone, Zouf marl, Rugo Mizza Sandstone, San Martino Calcarenite, Torrente Meduna Siltstone, Maraldi Sandstone, Bier Puddingstone, and Montello Conglomerate. total thickness of the Preplans Sandstopne does not exceed 115 m.

• bed-level stratigraphic resolution

Environment/lithology: offshore; fine-grained, medium, pebbly, gray sandstone

• "Based opn an absence of age-diagnostic fossils, the formation was interpreted to be Aquitanian in age due to its stratigraphic position".
• Preplans Sandstone is "made up of medium to fine-grained, dark-grey sandstone, coarsening upward, including small pebbles sparse or concentarted in layers. The base is formed by a transgression breccia over 1 m thick. Its topmost part consists of layers of coarse sandstone with abundant glauconite.

Size class: macrofossils

Collection methods: bulk,

• Based on single bulk samples, about 30 cubic centimetres each. Grain size data also provided.

Primary reference: M.P. Bernasconi and E. Robba. 1993. Molluscan palaeoecology and sedimentological features: an integrated appraoch from the Miocene Meduna section, northern Italy. Palaeogeography, Palaeoclimatology, Palaeoecology 100:267-290 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 37352: authorized by Austin Hendy, entered by Austin Hendy on 13.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• In enterers opinion the taxonomic list is representative of molluscan taxa, however no non-mollusca taxa are detailed.
 Arcida - Arcidae
Anadara sp. Gray 1847 ark
 Pectinida - Pectinoidae
 Carditida - Carditidae
Glans intermedia Brocchi 1814 clam
 Cardiida - Veneridae
Paphia vetula venus clam
"Callista cf. erycina" = Costacallista erycina Linnaeaus 1758 venus clam
 Lucinida - Lucinidae
Lucina sp. Bruguière 1797 clam
 Sorbeoconcha - Turritellidae
Turritella terebralis Lamarck 1799 turret shell
Protoma cathedralis Brongniart 1856 turret shell