Soderfjarden (Cambrian of Finland)

Also known as Lower Cambrian Acritarchs, Soderfjarden, W Finland

Where: Finland (63.0° N, 21.6° E)

• Paleocoordinates: 22.4° S, 90.3° W (Wright 2013)

• coordinate based on political unit

When: Early/Lower Cambrian (538.8 - 506.5 Ma)

• This is a description of the "sedimentary sequence" of the rocks of Soderfjarden. Little else is said about the rocks, including formation names.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified sandstone and shale

• The author mentions sandstones while describing worm burrows in the text and sandstones, shales and quartzite while describing his methods of sample preparation, but makes no direct lithological descriptions for these sedimentary rocks.

Size class: microfossils

Collection methods: core,

Primary reference: R. Tynni. 1978. Lower Cambrian fossils and acritarchs in the sedimentary rocks of Soderfjarden, Western Finland. Geological Society of Finland, Bulletin 297:39-81 [M. Patzkowsky/Z. Krug/Z. Krug]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 41196: authorized by Mark Patzkowsky, entered by Zack Krug on 08.07.2004

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
 Life -
Leiosphaeridia sp.
Leiosphaeridia sp. Eisenack 1958
unclassified
  -
Dictyodium sp., Leiovalia sp.
Dinophyceae
 Gonyaulacales - Goniodomaceae
Hystrichosphaeridium sp.
Hystrichosphaeridium sp. Deflandre 1936
  -
Vulcanisphaera sp., Multiplicisphaeridium sp.
Vulcanisphaera sp. Deunff 1961
Prasinophytae
  -
Tasmanites sp.
Tasmanites sp. Newton 1875
 Life -
Micrhystridium sp., Leiomarginata sp., Granomarginata sp., Archaeofavosina sp., Ooidium sp., Cymatiosphaera sp., Trachysphaeridium sp., Lophosphaeridium sp., Archaeodiscina sp., Comasphaeridium sp., Acanthodiacrodium sp., Stictosphaeridium sp.
Micrhystridium sp. Deflandre 1937 acritarchs
Leiomarginata sp. Naumova 1961 acritarchs
Granomarginata sp. Naumova 1960 acritarchs
Archaeofavosina sp. Naumova 1960 acritarchs
Ooidium sp. Timofeev 1957 acritarchs
Cymatiosphaera sp. Wetzel 1933 acritarchs
Trachysphaeridium sp. Timofeev 1966 acritarchs
Lophosphaeridium sp. Timofeev 1959 acritarchs
Archaeodiscina sp. Naumova 1960 acritarchs
Comasphaeridium sp. Staplin et al. 1965 acritarchs
Acanthodiacrodium sp. Timofeev 1958 acritarchs
Stictosphaeridium sp. Timofeev 1962 acritarchs