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- Title
Bryozoans from the lower Silurian (Wenlock) Steinsfjorden Formation of Ringerike, southern Norway.
- Authors
ERNST, ANDREJ; NAKREM, HANS ARNE
- Abstract
A stenolaemate bryozoan fauna from the lower Silurian (Wenlock) Steinsfjorden Formation of the Ringerike district, southern Norway contains 10 species (2 cystoporates, 6 trepostomes, and 2 cryptostomes). Six species are new: Heterotrypa ringerikensis sp. nov., Trematopora maculata sp. nov., Amplexopora cras sip arietum sp. nov., A. evae sp. nov., Orthopora worsleyi sp. nov., and Mediaporina kiaeri sp. nov. One species is described in open nomenclature: Eridotrypella sp. Trepostome bryozoans dominate this assemblage, both by diversity and abundance. The bryozoans occur in carbonates associated with evaporite minerals and sedimentary structures indicating very shallow depositional settings.
- Subjects
RINGERIKE (Norway); BRYOZOA; INVERTEBRATES; GEOLOGICAL formations; CYSTOPORATA; TREPOSTOMATA; CRYPTOSTOMATA
- Publication
Bulletin of Geosciences, 2015, Vol 90, Issue 1, p65
- ISSN
1214-1119
- Publication type
Article
- DOI
10.3140/bull.geosci.1521