Torrente Meduna sample 20 (Miocene of Italy)

Also known as Venus-Conus community sample 20

Where: Pordenone, Italy (46.2° N, 12.8° E: paleocoordinates 46.0° N, 12.6° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Montello conglomerate Formation, Tortonian (11.6 - 7.2 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. The exposed thickness of the Montello Conglomerate has been estimated to reach several hundred metres.

• bed-level stratigraphic resolution

Environment/lithology: deltaic; unlithified, yellow conglomerate

• "In the absence of age-diagnostic microfaunas, the age was reported to be Tortonian grading into Messinian (Gelati, 1969; Massari et al., 1986). This assignment is consistent with the presence of marine megafossils in the lower part of the unit and of fresh-water molluscks in the upper levels"....."The Miocene sequence is truncated by and erosional surface and is overlain by Quaternary alluvial deposits of the Fiuli plain."
• Montello Conglomerate "consists of yellowish conglomerate, fine-grained loose sand and blue-grey clayey silt".

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 37380: authorized by Austin Hendy, entered by Austin Hendy on 14.03.2004

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.
Bivalvia
 Thraciida - Thraciidae
"Thracia pubescens" = Thracia (Thracia) pubescens
"Thracia pubescens" = Thracia (Thracia) pubescens Pulteney 1799 clam
 Cardiida - Mactridae
Spisula subtruncata da Costa 1778 clam
 Cardiida - Veneridae
Pitar rudis Poli 1795 venus clam
 Cardiida - Tellinidae
Tellina planata Linnaeus 1758 tellin clam
 Cardiida - Psammobiidae
"Psammobia affinis" = Gari (Psammobia)
"Psammobia affinis" = Gari (Psammobia) clam
 Solenida - Solenidae
Solen marginatus Pulteney 1799 clam