GGU 314927 - C.H. Ostenfeld Nunatak (B) (Cambrian of Greenland)

Where: Greenland (74.4° N, 22.8° W: paleocoordinates 30.5° S, 48.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Ella Island Formation, Dyeran (516.0 - 513.0 Ma)

• 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 very top of Ella Island Fm; correlative to GGU 313926 and immediately below GGU 313925. 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.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

• ENVIRONMENT: High energy, shallow-water environment.
• GENERAL LITHOLOGY: Limestone, in places oolitic. LITHOLOGY: Lithified, based on figured specimens and facies description.

Size class: macrofossils

Preservation: cast, mold/impression, original calcite, original phosphate, replaced with phosphate

Collection methods: bulk, chemical, acetic, sieve,

• COLLECTOR: Collected by S. Peel and M.P. Smith (1988), and earlier collectors. PREPARATION: 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. REPOSITORY: All specimens are housed in the Geological Museum in Copenhagen (MGUH).

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 67796: authorized by Austin Hendy, entered by Austin Hendy on 10.12.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: 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. NOMENCLATURE: Authoritative publication, with occurrences identified to species resolution where possible and with modern nomenclature.
 Hyolithelminthida - Hyolithellidae
Hyolithellus micans Billings 1871
Salterella maccullochi
  - Salterellidae