Bavnodde Greensand Formation, Jydegard, Bornholm: Late/Upper Coniacian - Early/Lower Santonian, Denmark
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Nostoceratidae
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Nostoceras (Eubostrychoceras) cf. saxonicum
(Schluter 1875)
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Kennedy and Christensen 1991 | 1 specimen | ||||||||
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Cephalopoda
- Belemnitida
- Belemnitellidae
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Actinocamax lundgreni
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3 specimens | |||||||||
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Actinocamax westfalicus
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4 specimens | |||||||||
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Actinocamax informal sp. 1
Miller 1823
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5 specimens | |||||||||
| A. aff. westfalicus | ||||||||||
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus (? Sphenoceramus) bornholmensis n. sp.
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Tröger and Christensen 1991 | 4 specimens | ||||||||
| original and current combination Sphenoceramus | ||||||||||
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Inoceramus (Sphenoceramus) ex gr. pachti
(Archanguelsky 1916)
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Tröger and Christensen 1991 | 1 specimen | ||||||||
| I. (S.) ex gr. pachti/cardissoides | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Denmark |
| Coordinates: | 55.1° North, 14.8° East (view map) |
| Paleocoordinates: | 45.1° North, 14.3° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| 10 m.y. bin: | Cretaceous 6 | ||
| Key time interval: | Late/Upper Coniacian - Early/Lower Santonian | ||
| Age range of interval: | 89.80000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Bavnodde Greensand | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 'the Greensand at Jydegard is lowest Santonian and possibly highest Coniacian' | |||||
Lithology and environment
| Primary lithology: | lithified 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'; specimens were derived from marl | |
| 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 |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: Museum repositories: MGUH and GM | |
| Taxonomic list comments:fragments are not included in abundace data of belemnites | |
Metadata
| Database number: | 70062 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | S. Nurnberg | Research group: | marine invertebrate |
| Created: | 2007-03-16 01:07:14 | Last modified: | 2007-03-16 12:12:20 |
| Access level: | the public | Released: | 2007-03-16 01:07:14 |
| Creative Commons license: | CC BY |
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] |