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 (516.0 - 513.0 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
  -
Microdictyon
  -
Microdictyon sp.3 Bengston et al. 1981
 Bradoriida - Hipponicharionidae
Albrunnicola sp.3 Martinsson 1979
 Bradoriida - Svealutidae
Liangshanella sayutinae3 Melnikova 1988
Trilobita
  -
Trilobita indet.3 Walch 1771 trilobite
 Redlichiida - Wanneriidae
Wanneriidae indet.3 Hupé 1952 trilobite
Hyolitha
 Orthothecida -
Orthothecida indet.1 Marek 1966
? Contitheca sp.3 Syssoiev 1972
 Orthothecida - Gracilithecidae
Gracilitheca sp.1 Syssoiev 1968
 Orthothecida - Circothecidae
Conotheca australiensis1 Bengtson et al. 1990
 Hyolithida -
Hyolithida indet.1 Mathew 1962
 Hyolithida - Nelegerocornidae
 Hyolithida -
Parkula bounites1 Bengtson et al. 1990
Obolellata
 Obolellida - Obolellidae
Obolella crassa Hall 1847
Lingulata
 Lingulida - Eoobolidae
Eoobolus priscus Poulsen 1932
 Lingulida - Botsfordiidae
Brachiopoda
  - Mickwitziidae
Helcionelloida
 Pelagiellida - Pelagiellidae
Pelagiella subangulata2 Tate 1892
314904, 06, 08-10, 31, 33
 Helcionellida - Helcionellidae
Mackinnonia taconica2 Landing and Bartowski 1996
314905
"Mackinnonia rostrata" = Davidonia rostrata2 Zhou and Xiao 1984
314931, 33
Capitoconus inclinatus2 Skovsted 2004
314908, 33
 Helcionellida - Stenothecidae
Stenotheca sp.2 Hicks 1872
314908
Anabarella australis2 Bengtson et al. 1990
314904, 08, 33
 Helcionellida - Coreospiridae
Latouchella ostenfeldense2 Skovsted 2004
314904, 06, 08, 10, 31 & 33
Bivalvia
 Fordillida - Fordillidae
Pojetaia runnegari2 Jell 1980 clam
314906, 33
unclassified
  -
 Hyolithelminthida - Hyolithellidae
Hyolithellus micans3 Billings 1871
 Hyolithelminthida - Torellellidae
Torellella laevigata3 Linnarsson 1871
Cupitheca
  - Cupithecidae
Cupitheca holocyclata1 Bengtson et al. 1990
Coeloscleritophora
 Chancelloriida - Chancelloriidae
Chancelloriidae indet.3 Walcott 1920
Cambroclavida
  -
Coleolidae
  - Coleolidae
Cassitella sp.3 Malinky and Skovsted 2004
Cassitella baculata1 Malinky and Skovsted 2004
Coleolus
  - Coleolidae
Coleolus sp.1 Hall 1879
Triplicatella
  -
Triplicatella cf. peltata3 Skovsted et al. 2004
Triplicatella sinuosa3 Skovsted et al. 2004
Discinella micans
  - Mobergellidae
Discinella micans3 Billings 1871
Aktugaia
  - Mobergellidae
? Aktugaia sp.3 Missarzhevsky 1976
Hexactinellida
  -
Hexactinellida indet.3 Schmidt 1870 glass sponge
 Pseudoconodontida -
Mongolitubulus henrikseni n. sp.5 Skovsted and Peel 2001
Salterella
  - Salterellidae