Torrente Meduna sample 17: Tortonian, Italy
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Calyptraea chinensis
(Linnaeus 1758)
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1 specimen | |||||||||
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Gastropoda
- Turritellidae
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Protoma rotifera
(Deshayes 1832)
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3 specimens | |||||||||
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Gastropoda
- Neogastropoda
- Ancillariidae
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Ancilla glandiformis
(Lamarck 1810)
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10 specimens | |||||||||
| recombined as Amalda glandiformis | ||||||||||
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Gastropoda
- Neogastropoda
- Nassariidae
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Amyclina cabrieriensis
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3 specimens | |||||||||
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Gastropoda
- Neogastropoda
- Turridae
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Gemmula sp.
(Weinkauff 1875)
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1 specimen | |||||||||
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Gastropoda
- Neogastropoda
- Clavatulidae
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Clavatula calcarata
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1 specimen | |||||||||
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Gastropoda
- Neogastropoda
- Conidae
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Conus canaliculatus
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3 specimens | |||||||||
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Conus sp.
Linnaeus 1758
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2 specimens | |||||||||
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Gastropoda
- Naticidae
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Neverita josephinia
(Risso 1826)
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1 specimen | |||||||||
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Bivalvia
- Nuculida
- Nuculidae
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Nucula nucleus
(Linnaeus 1758)
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2 specimens | |||||||||
| recombined as Nucula (Nucula) nucleus | ||||||||||
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Bivalvia
- Carditida
- Carditidae
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Megacardita jouranneti
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4 specimens | |||||||||
| Subspecies: Megacardita jouranneti ponderosa | ||||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Corbula gibba
(Oliva 1792)
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2 specimens | |||||||||
| recombined as Corbula (Varicorbula) gibba | ||||||||||
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Bivalvia
- Cardiida
- Veneridae
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Callista italica
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4 specimens | |||||||||
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Paphia vetula
(Basterot 1825)
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4 specimens | |||||||||
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Dosinia lupinus
(Linnaeus 1758)
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1 specimen | |||||||||
| recombined as Dosinia lupina | ||||||||||
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Venus multilamella
Lamarck 1818
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10 specimens | |||||||||
| recombined as Venus (Ventricoloidea) multilamella | ||||||||||
| Subspecies: venus multilamella glabroides | ||||||||||
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Pelecyora brocchii
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2 specimens | |||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Acanthocardia deshayesi
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1 specimen | |||||||||
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Bivalvia
- Cardiida
- Psammobiidae
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Psammobia affinis
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2 specimens | |||||||||
| spelled with current rank as Gari (Psammobia) | ||||||||||
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Bivalvia
- Cardiida
- Solecurtidae
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Azorinus chamasolen
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2 specimens | |||||||||
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Bivalvia
- Mytilida
- Mytilidae
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Mytilus fuscus
Gmelin 1791
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1 specimen | |||||||||
| recombined as Botula fusca | ||||||||||
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Bivalvia
- Arcida
- Arcidae
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Anadara diluvii
(Lamarck 1805)
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2 specimens | |||||||||
| recombined as Scapharca (Scapharca) diluvii | ||||||||||
| Subspecies: Anadara diluvii pertransversa | ||||||||||
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Bivalvia
- Ostreida
- Pinnidae
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Atrina pectinata
(Linnaeus 1758)
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2 specimens | |||||||||
| original and current combination Pinna pectinata | ||||||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Neopycnodonte navicularis
(Brocchi 1814)
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2 specimens | |||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Chlamys malvinae
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1 specimen | |||||||||
| 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: | 11.63000 - 7.24600 m.y. ago |
Stratigraphy
| Formation: | Maraldi Sandstone | ||||
| Local section: | Torrente Meduna | ||||
| 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. Thickness of the Maraldi Sandsone is approximately 220 m. | |||||
Lithology and environment
| Primary lithology: | silty marl |
| Includes fossils? | Y |
| Lithology description: Maraldi Sandstone "consists of fine to very fine-grained, yellowish sandstone, thickening upwards, alternating with darker, micaceous silty-marl forming beds of various thickness". | |
| Environment: | prodelta |
| Geology comments: "In the absence of age-diagnostic species, a Tortonian age was inferred on the basis of stratigraphic position". | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | all macrofossils |
| Collection methods: | bulk,field collection |
| Collection size: | 61 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. The reference states "Megafauna, mainly consisting of molluscs, is particularly abundant in the silty-marl levels where bivalves are prevalent; arenaceous beds contain diverse gastropod assemblages". | |
Metadata
| Also known as: | Venus-Ancilla assemblage sample 17 | ||
| Database number: | 37368 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2004-03-14 10:41:56 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2004-03-14 10:41:56 |
| 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] |