GGU 314901-10, 31, & 33-34 - C.H. Ostenfeld Nunatak (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: Bastion Formation, Dyeran (515.3 - 511.2 Ma)

• SPECIFIC COMMENTS: Collection is from near the base of the Bastion Formation. Lumped collections from same horizon, including GGU 314901-10, 31, 33-34.

•GENERAL COMMENTS: The Kloftelv Formation is overlain by the fossiliferous Bastion and Ella Island foramtions, both of middle Dyerian age (late Early Camrbian, equivalent of the Botomian). The Ella Island Formation (100 m thick) is mainlyy limestone and calcareous sandstone and is overlain by essentially unfossiliferous dolomites of the Hyolithus Creek and Dolomite Point formations, spanning the rest of the Cambrian Period.

• bed-level stratigraphic resolution

Environment/lithology: marine; shale

• The Bastion and Ella Island Formations from part of a thick succession of shallow-marine Proterozoic-Ordovician sediments deposited on the Laurentian shelf.
• Limestone and calcareous sandstone.

Size class: macrofossils

Collection methods: bulk, chemical, acetic, sieve,

• 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)

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49471: authorized by Austin Hendy, entered by Austin Hendy on 16.04.2005, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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.
unclassified
  -
 Hyolithelminthida - Hyolithellidae
Hyolithellus micans3 Billings 1871
 Hyolithelminthida - Torellellidae
Torellella laevigata3 Linnarsson 1871
Salterella
  - Salterellidae
Coleolus
  - Coleolidae
Coleolus sp.1 Hall 1879
Coleolidae
  - Coleolidae
Cassitella sp.3 Malinky and Skovsted 2004
Cassitella baculata1 Malinky and Skovsted 2004
Cambroclavida
  -
Discinella micans
  - Mobergellidae
Discinella micans3 Billings 1871
Aktugaia
  - Mobergellidae
? Aktugaia sp.3 Missarzhevsky 1976
Coeloscleritophora
 Chancelloriida - Chancelloriidae
Chancelloriidae indet.3 Walcott 1920
Hexactinellida
  -
Hexactinellida indet.3 Schmidt 1870 glass sponge
unclassified
  -
Hyolitha
 Hyolithida -
Hyolithida indet.1 Mathew 1962
Parkula bounites1 Bengtson et al. 1990
 Hyolithida - Nelegerocornidae
 Orthothecida -
Orthothecida indet.1 Marek 1966
Cupitheca holocyclata1 Bengtson et al. 1990
 Orthothecida - Gracilithecidae
Gracilitheca sp.1 Syssoiev 1968
 Orthothecida - Circothecidae
Conotheca australiensis1 Bengtson et al. 1990
 Orthothecida - Novitatidae
? Contitheca sp.3 Syssoiev 1972
 Orthothecida - Triplicatellidae
Triplicatella sinuosa3 Skovsted et al. 2004
Triplicatella cf. peltata3 Skovsted et al. 2004
Obolellata
 Obolellida - Obolellidae
Obolella crassa Hall 1847
Lingulata
 Lingulida - Botsfordiidae
 Lingulida - Eoobolidae
Eoobolus priscus Poulsen 1932
Brachiopoda
  - Mickwitziidae
Bivalvia
 Fordillida - Fordillidae
Pojetaia runnegari2 Jell 1980 clam
314906, 33
Helcionelloida
 Helcionellida - Coreospiridae
Latouchella ostenfeldense2 Skovsted 2004
314904, 06, 08, 10, 31 & 33
 Helcionellida - Helcionellidae
Anabarella australis2, Capitoconus inclinatus2, "Mackinnonia taconica" = Davidonia taconica2, "Mackinnonia rostrata" = Davidonia rostratum2
Anabarella australis2 Bengtson et al. 1990
314904, 08, 33
Capitoconus inclinatus2 Skovsted 2004
314908, 33
"Mackinnonia taconica" = Davidonia taconica2 Landing and Bartowski 1996
314905
"Mackinnonia rostrata" = Davidonia rostratum2 Zhou and Xiao 1984
314931, 33
 Helcionellida - Stenothecidae
Stenotheca sp.2 Hicks 1872
314908
 Pelagiellida - Pelagiellidae
Pelagiella subangulata2 Tate 1892
314904, 06, 08-10, 31, 33
 Bradoriida - Svealutidae
Liangshanella sayutinae3 Melnikova 1988
 Bradoriida - Hipponicharionidae
Albrunnicola sp.3 Martinsson 1979
Trilobita
  -
Trilobita indet.3 Walch 1771 trilobite
 Redlichiida - Wanneriidae
Wanneriidae indet.3 Hupé 1952 trilobite
Microdictyon
  -
Microdictyon sp.3 Bengston et al. 1981
 Pseudoconodontida -
Mongolitubulus henrikseni n. sp.5 Skovsted and Peel 2001