Torrente Meduna sample 21: Tortonian, Italy
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Thraciida
- Thraciidae
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Thracia convexa
Wood 1815
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1 specimen | ||||||
recombined as Thracia (Thracia) convexa | |||||||
Bivalvia
- Cardiida
- Veneridae
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Dosinia lupinus
(Linnaeus 1758)
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2 specimens | ||||||
recombined as Dosinia lupina | |||||||
Paphia taurelliptica
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1 specimen | ||||||
Bivalvia
- Cardiida
- Ungulinidae
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Diplodonta brocchii
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1 specimen | ||||||
Bivalvia
- Cardiida
- Montacutidae
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Montacuta truncata
Wood 1840
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1 specimen | ||||||
Bivalvia
- Cardiida
- Erycinidae
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Erycina ambigua
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1 specimen | ||||||
Bivalvia
- Cardiida
- Leptonidae
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Lepton transversarium
Cossmann 1896
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1 specimen | ||||||
recombined as Lepton (Lepton) transversarium | |||||||
Bivalvia
- Pholadida
- Pholadidae
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Barnea candida
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1 specimen | ||||||
Gastropoda
- Neogastropoda
- Conidae
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Conus berghausi
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1 specimen | ||||||
Gastropoda
- Neogastropoda
- Nassariidae
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Amyclina cabrieriensis
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1 specimen | ||||||
Gastropoda
- Naticidae
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Neverita josephinia
(Risso 1826)
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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] |