GGU 314923 - C.H. Ostenfeld Nunatak (B): Dyeran, Greenland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Echinodermata indet.
Klein 1754
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Skovsted 2006 | ||||||
Paterinata
- Paterinida
- Paterinidae
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Micromitra bella
(Billings 1872)
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Mickwitziidae
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Mickwitzia cf. occidens
Walcott 1908
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Skovsted and Holmer 2003 | ||||||
Trilobita
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Trilobita indet.
Walch 1771
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Skovsted 2006 | ||||||
Mobergellidae
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Discinella micans
(Billings 1871)
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Skovsted 2006 | ||||||
recombined as Hyolithellus micans | |||||||
see common names |
Geography
Country: | Greenland |
Coordinates: | 74.4° North, 22.8° West (view map) |
Paleocoordinates: | 30.5° South, 48.8° West |
Basis of coordinate: | estimated from map |
Geographic resolution: | outcrop |
Time
Period: | Cambrian | Epoch: | Series 2 |
10 m.y. bin: | Cambrian 2-3 | ||
Key time interval: | Dyeran | ||
Age range of interval: | 514.80000 - 511.00000 m.y. ago |
Stratigraphy
Formation: | Ella Island | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Ella Island Fm, which overlies the Bastion Fm and in turn the Kløftelv Fm (lower Cambrian) and is overlain by the Hyolithus Creek Fm (lower-middle Cambrian) and Dolomite Point Fm (middle Cambrian). STRATIGRAPHIC POSITION: From upper portion of Ella Island Fm; correlative to GGU 313913, 313924, and 313928. AGE: Well constrained to the late Early Cambrian (Dyeran Age or Bonnia-Olenellus Chron; see Palmer 1998) by the presence of Olenellid trilobites (Poulson 1932, Cowie and Adams 1957) and baltisphaerid acritarchs (Vidal 1979). THICKNESS: Thickness of formation at the Albert Heim section is 80-100 m. |
Lithology and environment
Primary lithology: | lithified "limestone" |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: GENERAL LITHOLOGY: Limestone, in places oolitic. LITHOLOGY: Lithified, based on figured specimens and facies description. | |
Environment: | shallow subtidal indet. |
Geology comments: ENVIRONMENT: High energy, shallow-water environment. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | bulk,chemical,acetic,sieve,field collection,survey of museum collection |
Reason for describing collection: | taxonomic analysis |
Collection method comments: Rock samples were dissolve in buffered 10 percent acetic acid to retrieve acid-resistent microfossils. The resulting residues were sieved and the heavy mineral fraction separated using sodium polytungstate. All specimens are housed in the Geological Museum in Copenhagen (MGUH) | |
Taxonomic list comments:Exhaustive for Brachiopoda. The residues of the acid-digested samples contain a well-preserved and diverse small shelly fauna including helcionellid molluscs, coelosclerites, lapworthellids, and problematic fossils. Add Gubanov et al. press and Skovsted in press (at the time of April, 2005) for complete fauna - references in current reference. |
Metadata
Database number: | 49468 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2005-04-16 12:46:21 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2005-04-16 12:46:21 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
13228. | C. B. Skovsted and L.E. Holmer. 2005. Early Cambrian brachiopods from north-east Greenland. Palaeontology 48(2):325-345 [A. Miller/A. Hendy/A. Hendy] |
Secondary references:
26496 | C. Skovsted and L. Holmer. 2003. The Early Cambrian (Botomian) stem group brachiopod Mickwitzia from Northeast Greenland. Acta Palaeontologica Polonica 48(1):1-20 [P. Wagner/P. Wagner] | |
19364 | C. B. Skovsted. 2006. Small shelly fauna from the upper Lower Cambrian Bastion and Ella Island Formations, North-East Greenland. Journal of Paleontology 80(6):1087-1112 [A. Hendy/A. Hendy] |