Torrente Meduna sample 18 (Miocene of Italy)

Also known as Venus-Conus community sample 18

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: Maraldi Sandstone 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. Thickness of the Maraldi Sandstone is approximately 220 m. Sample 18 is from the uppermost part of the Maraldi Sandstone

• bed-level stratigraphic resolution

Environment/lithology: prodelta; fine, yellow sandstone

• "In the absence of age-diagnostic species, a Tortonian age was inferred on the basis of stratigraphic position".
• Maraldi Sandstone "consists of fine to very fine-grained, yellowish sandstone, thickneneing upward, alternating with darker, micaceous silty marl forming beds of various thickness".

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 37377: 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.
 Cardiida - Cardiidae
 Thraciida - Thraciidae
"Thracia pubescens" = Thracia (Thracia) pubescens
"Thracia pubescens" = Thracia (Thracia) pubescens Pulteney 1799 clam
 Ptenoglossa - Vasidae
 Neogastropoda - Nassariidae
 Neogastropoda - Cancellariidae
 Neogastropoda - Turridae
 Neogastropoda - Conidae
Conus berghausi cone shell
Conus pyruloides cone shell
"Conus antiquus" = Lithoconus antiquus Lamarck 1810 cone shell
 Neogastropoda - Terebridae
"Subula modesta" = Terebra modesta
"Subula modesta" = Terebra modesta Defrance 1829 auger snail
 Naticoidea - Naticidae
Neverita josephinia Risso 1826 moon snail
 Tonnoidea - Cassidae
"Semicassis miolaevigata" = Phalium (Semicassis) miolaevigata
"Semicassis miolaevigata" = Phalium (Semicassis) miolaevigata Sacco 1890 snail
 Sorbeoconcha - Campanilidae
"Cerithium vulgatum" = Cerithium (Thericium) vulgatum
"Cerithium vulgatum" = Cerithium (Thericium) vulgatum Bruguière 1789 snail
 Sorbeoconcha - Turritellidae
Protoma rotifera Deshayes 1832 turret shell