Torrente Meduna sample 21: Tortonian, Italy

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Thraciida - Thraciidae
Thracia convexa Wood 1815
1 specimen
recombined as Thracia (Thracia) convexa
Bivalvia - Cardiida - Veneridae
Dosinia lupinus (Linnaeus 1758)
2 specimens
recombined as Dosinia lupina
Paphia taurelliptica
1 specimen
Bivalvia - Cardiida - Ungulinidae
Diplodonta brocchii
1 specimen
Bivalvia - Cardiida - Montacutidae
Montacuta truncata Wood 1840
1 specimen
Bivalvia - Cardiida - Erycinidae
Erycina ambigua
1 specimen
Bivalvia - Cardiida - Leptonidae
Lepton transversarium Cossmann 1896
1 specimen
recombined as Lepton (Lepton) transversarium
Bivalvia - Pholadida - Pholadidae
Barnea candida
1 specimen
Gastropoda - Neogastropoda - Conidae
Conus berghausi
1 specimen
Gastropoda - Neogastropoda - Nassariidae
Amyclina cabrieriensis
1 specimen
Gastropoda - Naticidae
Neverita josephinia (Risso 1826)
3 specimens
see common names

Geography
Country:Italy State/province:Pordenone County:Friuli
Coordinates: 46.2° North, 12.8° East (view map)
Paleocoordinates:46.0° North, 12.6° East
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
Stage:Tortonian 10 m.y. bin:Cenozoic 6
Key time interval:Tortonian
Age range of interval:11.62000 - 7.24600 m.y. ago
Stratigraphy
Formation:Montello conglomerate
Stratigraphic resolution:bed
Stratigraphy comments: 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.
Lithology and environment
Primary lithology:yellow unlithified conglomerate
Includes fossils?Y
Lithology description: Montello Conglomerate "consists of yellowish conglomerate, fine-grained loose sand and blue-grey clayey silt".
Environment:deltaic indet.
Geology comments: "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."
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:bulk,field collection
Collection size:14 specimens
Rock censused:30 cm3 (volume)
Reason for describing collection:paleoecologic analysis
Collection method comments: Based on single bulk samples, about 30 cubic centimetres each. Grain size data also provided.
Taxonomic list comments:In enterers opinion the taxonomic list is representative of molluscan taxa, however no non-mollusca taxa are detailed.
Metadata
Also known as:Venus-Conus community sample 21
Database number:37379
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-03-14 12:25:55 Last modified:2013-11-25 13:37:23
Access level:group members Released:2005-03-14 12:25:55
Creative Commons license:CC BY
Reference information

Primary reference:

10020. 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]