Lunden, Särdal, Division B, Halland: Early/Lower Santonian - Middle Santonian, Sweden
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Nodosariata
- Vaginulinida
- Vaginulinidae
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Lenticulina secans
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4 specimens | |||||||||
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Neoflabellina deltoidea
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6 specimens | |||||||||
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unclassified
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Conorbina marginata
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50 specimens | |||||||||
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Globothalamea
- Rotaliida
- Gavelinellidae
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Gavelinella sandigei
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1 specimen | |||||||||
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Gavelinella tumida
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5 specimens | |||||||||
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Globotruncanidae
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Archaeoglobigerina bosquensis
Pessagno 1967
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2 specimens | |||||||||
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Demospongiae
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Demospongea indet.
(Sollas 1875)
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| corrected as Demospongiae | ||||||||||
| Demosponge spicules | ||||||||||
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Chondrichthyes
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Chondrichthyes indet.
Huxley 1880
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3 elements | |||||||||
| shark | ||||||||||
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Chondrichthyes
- Lamniformes
- Lamnidae
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Isurus sp.
Rafinesque 1810
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Chondrichthyes
- Lamniformes
- Anacoracidae
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Squalicorax lindstroemi
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1 element | |||||||||
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Echinoidea
- Cidaroida
- Cidaridae
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Cidaris sp.
Leske 1778
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5 elements | |||||||||
| spines | ||||||||||
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Echinoidea
- Cidaroida
- Psychocidaridae
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Tylocidaris sp.
Pomel 1883
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22 elements | |||||||||
| spines | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Rhynchonellidae
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"Rhynchonella" flustracea
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13 specimens | |||||||||
| "R." flustracea Buch? | ||||||||||
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"Rhynchonella" (? Cretirhynchia) sp.
Fischer 1809
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1 specimen | |||||||||
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Rhynchonellata
- Terebratulida
- Cancellothyrididae
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Terebratulina striata
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2 specimens | |||||||||
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Rhynchonellata
- Terebratulida
- Gibbithyrididae
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Concinnithyris ? ciplyensis
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1 specimen | |||||||||
| C. ciplyensis (v Hanst.)? | ||||||||||
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Rhynchonellata
- Terebratulida
- Terebratulidae
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"Terebratula" ? praelustris
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1 specimen | |||||||||
| "T." praelustris Lundgren? | ||||||||||
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Rhynchonellata
- Terebratulida
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Rhynchorina cf. spathulata
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2 specimens | |||||||||
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unclassified
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Bryozoa indet.
Ehrenberg 1831
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Stenolaemata
- Cyclostomata
- Cytididae
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Semicytella sp.
Bassler 1934
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Stenolaemata
- Cyclostomata
- Petaloporidae
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? Reteporidea sp.
D'Orbigny 1849
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common category | |||||||||
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Stenolaemata
- Cyclostomata
- Eleidae
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? Pennipora sp.
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Stenolaemata
- Cyclostomata
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Homeosolen sp.
(Lonsdale 1850)
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common category | |||||||||
| original and current combination Homoeosolen | ||||||||||
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Stenolaemata
- Cyclostomata
- Corymboporidae
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? Corymbopora sp.
Michelin 1846
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Fungella sp.
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Cephalopoda
- Belemnitida
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Belemnitida indet.
Zittel 1895
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9 specimens | |||||||||
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Cephalopoda
- Belemnitida
- Belemnitellidae
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Belemnitella propinqua
Moberg 1885
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31 specimens | |||||||||
| B. propinqua propinqua | ||||||||||
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Actinocamax verus
Miller 1823
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1 specimen | |||||||||
| recombined as Belemnitella vera | ||||||||||
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Cephalopoda
- Belemnitida
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Gonioteuthis westfalica
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46 specimens | |||||||||
| G. westfalica westfalica | ||||||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Lopha semiplana
(Sowerby 1825)
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3 specimens | |||||||||
| recombined as Hyotissa semiplana | ||||||||||
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Exogyra ? obliquata
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1 specimen | |||||||||
| E. obliquata (Pulteney)? | ||||||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea marklini
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41 specimens | |||||||||
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Bivalvia
- Pectinida
- Spondylidae
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Spondylus sp.
Linnaeus 1758
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| fragments | ||||||||||
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Thecostraca
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Cirripedia indet.
Rafinesque 1816
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28 elements | |||||||||
| plates (one species) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Sweden |
| Coordinates: | 56.8° North, 12.6° East (view map) |
| Paleocoordinates: | 46.7° North, 12.8° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Early/Lower Santonian - Middle Santonian | ||
| Age range of interval: | 86.30000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Särdal Beds | ||||
| Local section: | Särdal | Local bed: | B | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Division B, calcareous sandstone; 'dating with the aid of foraminifera and belemnites gives an age around the Early/Middle Santonian boundary' | |||||
Lithology and environment
| Primary lithology: | lithified calcareous sandstone |
| Lithology description: 'The upper rock unit consists of conglomerate boulders sparsely arranged in one level and a matrix of richly fossiliferous sandstone. The boulders all consist of local type gneiss and measure about 0.5-1 m across. They are generally well rounded and undoubtedly indicate the former presence of a shoreline... The sandstone reaches a maximum thickness of 70 cm and consists largely of loosely cemented subangular, well sorted quartz grains with a size of approx. 1 mm.' | |
| Environment: | shoreface |
| Glacial or sequence phase: | transgressive |
| Geology comments: 'despite the short time interval, two transgressions are recorded... The predominance of a varied fauna of benthic calcareous foriminifera, accompanied by a low and rather constant frequency of arenaceous forms, very likely indicates that this fauna lived in a sublittoral, possibly outer sublittoral environment. Probably, the beds were formed not very distant from the shore... the well sorted sand in the sandstone bed may indicate upper sublittoral conditions.' | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,microfossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: authors and amateur collections;
Museum repositories: Geological Survey of Sweden (EN), the Mineralogical Museum in Copenhagen (MMH), Geological Institute in Lund (LO) | |
| Taxonomic list comments:'...yielded a rich fauna which, except for the cephalopods, is only preliminarily treated' | |
Metadata
| Database number: | 70316 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | M. Manojlovic | Research group: | marine invertebrate,micropaleontology |
| Created: | 2007-03-21 06:35:38 | Last modified: | 2016-07-25 16:24:16 |
| Access level: | the public | Released: | 2007-03-21 06:35:38 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 23599. | J. Bergström, W. K. Christensen, C. Johansson and E. Norling. 1973. An extension of Upper Cretaceous Rocks to the Swedish west coast at Särdal. Bull. geol. Soc. Denmark 22:83-154 [M. Aberhan/S. Nurnberg/J. Alroy] |