Bavnodde Greensand Formation, Risenholm, Bornholm: Early Santonian, Denmark
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites cf. fuchsi
Redtenbacher 1873
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Kennedy and Christensen 1991 | 1 specimen | ||||||||
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Cephalopoda
- Ammonitida
- Scaphitidae
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Scaphites (Scaphites) kieslingswaldensis
(Langenhan and Grundey 1891)
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Kennedy and Christensen 1991 | 6 specimens | ||||||||
| S. (S.) kieslingswaldensis fischeri | ||||||||||
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Cephalopoda
- Ammonitida
- Collignoniceratidae
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Protexanites (Protexanites) sp.
Matsumoto 1955
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Kennedy and Christensen 1991 | 1 specimen | ||||||||
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Cephalopoda
- Belemnitida
- Belemnitellidae
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| 4 specimens | ||||||||||
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Bivalvia
- Myalinida
- Inoceramidae
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| Tröger and Christensen 1991 | 1 specimen | |||||||||
| Tröger and Christensen 1991 | 2 specimens | |||||||||
| Tröger and Christensen 1991 | 3 specimens | |||||||||
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Inoceramus (Sphenoceramus) ex gr. pachti
(Archanguelsky 1916)
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Tröger and Christensen 1991 | 4 specimens | ||||||||
| I. (S.) ex gr. pachti/cardissoides | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Denmark |
| Coordinates: | 55.1° North, 14.8° East (view map) |
| Paleocoordinates: | 45.5° North, 25.2° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Early Santonian | ||
| Age range of interval: | 85.7 - 83.6 m.y. ago |
Stratigraphy
| Formation: | Bavnodde Greensand | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 'the Bavnodde Greensand Formation exposed at Risenholm is basal Santonian' | |||||
Lithology and environment
| Primary lithology: | lithified sandy marl |
| Lithology description: 'the formation consists of poorly sorted, calcareous, glauconitic, fine-grained, silty quartz sand. Several layers of nodular greensand, quartzitic beds, and marly beds are included in the greensand, which is strongly bioturbated. In the Nyker fault block the formation consists of greensands and marls'; it is noted that most specimens were derived from (sandy) marls | |
| Environment: | shoreface |
| Geology comments: classification based on high bioturbation | |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: Museum repositories: MGUH, MMH and GM | |
| Taxonomic list comments:fragments are not included in abundace data of belemnites | |
Metadata
| Database number: | 70061 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | S. Nurnberg | Research group: | marine invertebrate |
| Created: | 2007-03-16 00:56:14 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2007-03-16 00:56:14 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 23526. | T. Birkelund. 1957. Upper Cretaceous belemnites from Denmark. Biologiske Skrifter. Det Kongelige Danske Viden-skabernes Selskab 9(1):1-69 [M. Aberhan/S. Nurnberg/P. Wagner] |
Secondary references:
| 23523 | W. J. Kennedy and W. K. Christensen. 1991. Coniacian and Santonian ammonites from Bornholm, Denmark. Bulletin of the Geological Society of Denmark 38:203-226 [M. Aberhan/S. Nurnberg/M. Clapham] | |
| 23500 | K.-A. Tröger and W. K. Christensen. 1991. Upper Cretaceous (Cenomanian-Santonian) inoceramid bivalve faunas from the island of Bornholm, Denmark. Geological Survey of Denmark, DGU Series A (28)1-47 [M. Aberhan/S. Nurnberg/S. Nurnberg] |