Holmia fauna, Tomten [Sparagmite Fm] (Cambrian of Norway)

Where: Mjosen, Norway (60.9° N, 10.7° E: paleocoordinates 40.1° S, 23.4° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Holmia kjerulfi trilobite zone, Tømten Member (Ringstrand Formation), Botomian (516.0 - 513.0 Ma)

• The author refers to these shales as the Holmia shales, becuase of the presence of the genus Holmia. These beds are said by the author to be Lower Cambrian. AGE: Atdabanian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data. PJW: Was Sparagmite, but this is almost certainly the Tømten member of the Ringstrand formation.

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal; gray, green, argillaceous shale and coarse-grained sandstone

• grey-green, fine grained argillaceous shale with some layers of coarse, rounded quartz grains.

Size class: macrofossils

Primary reference: J. Kiær. 1916. The Lower Cambrian Holmia fauna at Tomten in Norway. Videnskapsselskapets Skrifter. I. Matematisk - naturvitenskapelig Klasse 1916(10):140 [M. Patzkowsky/Z. Krug/Z. Krug]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42220: authorized by Mark Patzkowsky, entered by Zack Krug on 26.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

  - Salterellidae
Volborthella tenuis Schmidt 1888
 Hyolithelminthida - Torellellidae
Torellella laevigata Linnarsson 1871
 Helcionellida - Helcionellidae
"Helcionella rugosa" = Helcionella subrugosa, "Scenella depressa n. sp." = Marocella depressa, "Scenella antiqua n. sp." = Marocella antiqua
"Helcionella rugosa" = Helcionella subrugosa Hall 1847
"Scenella depressa n. sp." = Marocella depressa Kiær 1916
"Scenella antiqua n. sp." = Marocella antiqua Kiær 1916
 Hyolithida - Hyolithidae
"Hyolithus corrugatus n. sp." = Hyolithes, "Hyolithus "sp. 1"" = Hyolithes, "Hyolithus "sp. 2"" = Hyolithes, "Hyolithus "sp. 3"" = Hyolithes
"Hyolithus corrugatus n. sp." = Hyolithes
"Hyolithus "sp. 1"" = Hyolithes d'Eichwald 1840
"Hyolithus "sp. 2"" = Hyolithes d'Eichwald 1840
"Hyolithus "sp. 3"" = Hyolithes d'Eichwald 1840
 Lingulida - Obolidae
Lingulella ? sp. Salter 1866
 Lingulida - Acrothelidae
 Obolellida - Obolellidae
 Agnostida - Weymouthiidae
 Redlichiida - Holmiidae
Holmia grandis n. sp. Kiaer 1917 trilobite
Holmia kjerulfi Linnarsson 1871 trilobite
Kjerulfia lata n. gen. n. sp. Kiaer 1917 trilobite
 Redlichiida - Ellipsocephalidae