Gainfarn - Parasequence 2: Middle Miocene, Austria
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Phasianellidae
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Tricolia eichwaldi
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10.67 specimens | |||||||||
Average abundance, Sandy level-bottom assemblages (6) + Tempistitic shell beds with sandy matrix (4.67) | ||||||||||
Gastropoda
- Trochidae
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Paroxystele orientalis
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3.67 specimens | |||||||||
spelled with current rank as Diloma (Paroxystele) | ||||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Gibbula pseudangulata
Boettger 1907
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7.75 specimens | |||||||||
Average abundance, Sandy level-bottom assemblages (3.75) + Tempistitic shell beds with sandy matrix (4) | ||||||||||
Gastropoda
- Cerithiidae
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Bittium reticulatum
(Montagu 1803)
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20.75 specimens | |||||||||
Average abundance, Sandy level-bottom assemblages (11.75) + Tempestitic shell beds with sandy matrix (9) | ||||||||||
Gastropoda
- Turritellidae
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Turritella bicarinata
Elchwald 1830
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5 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Turritella tricincta
Münster 1841
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1.33 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Turritella erronea
Cossmann 1914
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3.67 specimens | |||||||||
recombined as Turritella (Archimediella) erronea | ||||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Gastropoda
- Aporrhaidae
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Aporrhais pespelecani
(Linnaeus 1758)
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3 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Gastropoda
- Neogastropoda
- Ancillariidae
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Amalda glandiformis
(Lamarck 1810)
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2 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Gastropoda
- Neogastropoda
- Conidae
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Conus dujardini
Deshayes 1845
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2 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Bivalvia
- Arcida
- Glycymerididae
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Glycymeris cf. pilosa
(Linnaeus 1767)
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2.88 specimens | |||||||||
Average abundance, Sandy level-bottom assemblages (1.5) + Tempistitic shell beds with sandy matrix (1.33) | ||||||||||
Bivalvia
- Ostreida
- Ostreidae
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Ostrea digitalina
(Eichwald 1830)
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4.67 specimens | |||||||||
recombined as Cubitostrea digitalina | ||||||||||
Average abundance, Sandy level-bottom assemblages (2) + Tempestitic shell beds with sandy matrix (2.67) | ||||||||||
Bivalvia
- Lucinida
- Lucinidae
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Loripes dentatus
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8.33 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Bivalvia
- Pholadida
- Corbulidae
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Corbula gibba
(Oliva 1792)
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19.67 specimens | |||||||||
recombined as Corbula (Varicorbula) gibba | ||||||||||
(s.l.) Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Bivalvia
- Cardiida
- Veneridae
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Gouldia minima
(Montagu 1803)
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3.33 specimens | |||||||||
recombined as Gouldia (Gouldia) minima | ||||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Pelecyora islandicoides
(Lamarck 1818)
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1 specimen | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Venus nux
Gmelin 1791
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1 specimen | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Circomphalus subplicatus
(dOrbigny 1852)
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1.33 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Bivalvia
- Cardiida
- Cardiidae
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Acanthocardia turonica
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1 specimen | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Bivalvia
- Hiatellida
- Hiatellidae
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Panopea menardi
(Deshayes 1829)
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1 specimen | |||||||||
recombined as Panopea (Panopea) menardi | ||||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Bivalvia
- Carditida
- Carditidae
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Glans subrudista
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2 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Scaphopoda
- Dentaliida
- Dentaliidae
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Antalis cf. quindeciesstriata
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1.33 specimens | |||||||||
Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
Polychaeta
- Sabellida
- Serpulidae
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Serpulidae indet.
Rafinesque 1835
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2.33 specimens | |||||||||
(incl. Protula protensa) Average abundance, Tempistitic shell beds with sandy matrix | ||||||||||
see common names |
Geography
Country: | Austria | State/province: | Vienna |
Coordinates: | 48.0° North, 16.2° East (view map) | ||
Paleocoordinates: | 47.4° North, 15.8° East | ||
Basis of coordinate: | based on nearby landmark |
Time
Period: | Neogene | Epoch: | Miocene |
10 m.y. bin: | Cenozoic 5 | ||
Key time interval: | Middle Miocene | Foram zone: | Upper Lagenidae |
Age range of interval: | 15.97000 - 11.60800 m.y. ago |
Stratigraphy
Formation: | Vienna Basin | ||||
Stratigraphy comments: The formation of the Vienna Basin started in the Early Miocene as an E–W trending piggyback basin on top of the Alpine thrust belt. Owing to rapid subsidence, the Miocene sedimentary successions reach up to 5,500 m thickness in the central part of the basin. |
Lithology and environment
Primary lithology: | fine,medium silty,sandy claystone |
Secondary lithology: | shelly/skeletal poorly lithified sandstone |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: Samples D4, D5: silty clay with layers of sandy silt Samples E4a, E4b, S2 (BSB), S3 (BSB): tempestitic shell bed with sandy silt matrix Sample E1, E5: fine-medium sand Sample E2: conglomerate with sandy matrix Sample E3: poorly sorted coarse sand | |
Environment: | shallow subtidal indet. |
Geology comments: The composition of the sandy level-bottom assemblages and the sandy tempestitic shell beds suggests the presence of shallow sublittoral sea grass– and algae-dominated habitats in the HST, as indicated by abundant Tricolia eichwaldi and Gibbula spp. Also, the relatively rare Smaragdia cling to sea grasses in modern environments (Bandel and Wedler, 1987). Sea grass meadows, finally, would also have served as a food supply for sirenians. |
Taphonomy
Modes of preservation: | body,shellbed |
Size of fossils: | macrofossils,mesofossils,microfossils |
Abundance in sediment: | abundant |
Size sorting: | medium |
Fragmentation: | frequent |
Bioerosion: | frequent |
Encrustation: | occasional |
Collection methods and comments
Collection methods: | bulk,surface (in situ),sieve |
Reason for describing collection: | general faunal/floral analysis |
Collection method comments: We excavated seven deep trenches with power shovels. We took 28 bulk samples from sediments at this section, their weights ranging from 1,700 to 3,800 g. The sediment was wet sieved through a 1 mm screen, and material 1 mm was quantitatively picked under a binocular microscope for all biogenic components. | |
Taxonomic list comments:For sponges, every bioeroded biogenic hard part with distinct traces ofthe ichnogenus Entobia was counted as a sponge colony. For mollusks, every shell (gastropods, scaphopods), every isolated valve(bivalves),and every isolated plate (polyplacophorans) was counted as an individual. Identifiable fragments of mollusks were only considered to indicate the presenceofaspeciesinasample,ifnowholeshellsorvalveswerefound. For bryozoans and serpulids, fragments 0.5 cm were counted as individuals or colonies, but smaller fragments were only used to indicate the presence of a species. Each decapod claw, echinoid spine, and vertebrate hard part (including bones, teeth, and otoliths) was counted as an individual. In addition to these quantitative samples, each layer was scoured for large-sized species, which are likely underrepresentedinbulk samples, and a species was added as present to the data matrix where appropriate. Altogether, 9,101 fossils were counted and sorted into 198 species (see Supplementary Data 11). For statistical analysis, samplescontaining 10 fossils and fossils occurring with only one specimen (singletons) were removed; the final data matrix contained 22 samples, 112 species, and 8,986 specimens (98.7% of the original data). |
Metadata
Database number: | 174159 | ||
Authorizer: | M. Uhen | Enterer: | M. Bean | Research group: | vertebrate |
Created: | 2015-10-31 13:30:45 | Last modified: | 2015-10-31 13:30:45 |
Access level: | the public | Released: | 2015-10-31 13:30:45 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
56826. | M. Zuschin, M. Harzhauser, and O. Mandic. 2007. The Stratigraphic and Sedimentologic Framework of Fine-Scale Faunal Replacements in the Middle Miocene of the Vienna Basin (Austria). Palaios 22(3):285-295 [M. Uhen/M. Bean/M. Bean] |