Graaklopp (Tjornes Horizon 21): Pleistocene, Iceland
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 individual | |||||||||
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Gastropoda
- Neogastropoda
- Conidae
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Bela decussata
(Couthouy 1839)
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12 individuals | |||||||||
| recombined as Curtitoma decussata | ||||||||||
| subspecies tjornesensis | ||||||||||
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Bela borealis
(Reeve 1846)
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45 individuals | |||||||||
| synonym of Curtitoma decussata | ||||||||||
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Gastropoda
- Neogastropoda
- Cancellariidae
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Admete viridula
(Fabricius 1780)
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4 individuals | |||||||||
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Gastropoda
- Naticidae
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Natica clausa
Broderip and Sowerby 1829
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4 individuals | |||||||||
| synonym of Cryptonatica affinis | ||||||||||
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Natica sp.
Scopoli 1777
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8 individuals | |||||||||
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Natica helicina
Brocchi 1814
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1 individual | |||||||||
| recombined as Euspira helicina | ||||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Lentidium complanatum
(Lamarck 1822)
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3 individuals | |||||||||
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Bivalvia
- Cardiida
- Arcticidae
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Arctica islandica
(Linnaeus 1767)
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4 individuals | |||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Serripes groenlandicus
Mohr 1786
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39 individuals | |||||||||
| recombined as Serripes (Serripes) groenlandicus | ||||||||||
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Bivalvia
- Cardiida
- Tellinidae
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Macoma praetenuis
(Leathes in Woodward 1830)
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8 individuals | |||||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia borealis
(Conrad 1831)
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3 individuals | |||||||||
| recombined as Cyclocardia borealis | ||||||||||
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Bivalvia
- Carditida
- Astartidae
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Astarte crenata
(Gray 1824)
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2 individuals | |||||||||
| see common names | ||||||||||
Geography
| Country: | Iceland |
| Coordinates: | 66.2° North, 17.2° West (view map) |
| Paleocoordinates: | 66.2° North, 17.1° West |
| Basis of coordinate: | based on political unit |
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Pleistocene | ||
| Age range of interval: | 2.58000 - 0.01170 m.y. ago |
Stratigraphy
| Stratigraphy comments: Horizon 21 within the Serripes Zone of the Tjornes Sequence in Bardarson's Horizons. |
Lithology and environment
| Primary lithology: | sandstone |
| Environment: | shallow subtidal indet. |
| Geology comments: Deposits probably formed in very shallow water. They are most likely intertidal swash zone deposits or subtidal channel deposits. | |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection methods: | bulk |
| Rock censused: | 1 kg |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Samples of 2-3kg were taken in Baroarson's horizons. Quantitative mollusc analyses were carried out on about 1kg of each sample by picking apart the material. | |
Metadata
| Database number: | 79901 | ||
| Authorizer: | A. Miller | Enterer: | K. Bulinski | Research group: | marine invertebrate |
| Created: | 2008-03-26 08:48:04 | Last modified: | 2008-03-26 10:48:04 |
| Access level: | the public | Released: | 2008-03-26 08:48:03 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26591. | P. E. P. Norton. 1975. Unpublished census data for the Mollusca of the Tjornes sequence, Iceland. [A. Hendy/A. Hendy] |