Lower Cambrian Acritarchs, Soderfjarden, W Finland (Cambrian of Finland)

Where: Soderfjarden, Finland (63.0° N, 21.6° E: paleocoordinates 44.4° S, 18.4° W)

• coordinate based on political unit

When: Cambrian (541.0 - 485.4 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: CC BY (attribution)

Taxonomic list

unclassified
  -
Prasinophytae
  -
Tasmanites sp. Newton 1875
 Life -
Acanthodiacrodium sp. Timofeev 1958 acritarcs
Comasphaeridium sp. Staplin et al. 1965 acritarcs
Micrhystridium sp. Naumova 1968 acritarcs
Leiomarginata sp. Naumova 1961 acritarcs
Cymatiosphaera sp. Wetzel and Deflandre 1954 acritarcs
Leiosphaeridia sp. Eisenack 1958 acritarcs
Granomarginata
  -
Granomarginata sp. Naumova 1960
Dinophyceae
 Gonyaulacales - Goniodomaceae
Hystrichosphaeridium sp. Deflandre 1936