GGU 314913 - C.H. Ostenfeld Nunatak (A): Dyeran, Greenland

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Palaeoscolecida - Cricocosmida - Palaeoscolecidae
Salterellidae
Hyolithelminthida - Hyolithellidae
see common names

Geography
Country:Greenland
Coordinates: 74.4° North, 22.8° West (view map)
Paleocoordinates:17.6° North, 84.6° West (Wright 2013)
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: 515.3 - 509.7 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 313924, 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:67798
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2006-12-10 12:09:27 Last modified:2025-02-22 15:12:02
Access level:the public Released:2006-12-10 12:09:22
Creative Commons license:CC0
Reference information

Primary reference:
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]