Nanahughmilleria norvegica-Ostracoderm Comm. at Rudstangen, Ringerike Dist.: Rootsikula, Norway

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Petromyzontida - Cephalaspidiformes - Ateleaspididae
Anaspida - Birkeniida - Pharyngolepididae
Anaspida
Loganelliformes - Loganelliidae
Phlebolepidiformes - Katoporididae
Coelolepidae
Thelodus laevis (Pander 1856)
unclassified
Petromyzontida - Cephalaspidiformes - Ateleaspididae
Xiphosura - Xiphosurida
Xiphosurida indet. Latreille 1802
Eurypterida - Adelophthalmidae
Eurypterida - Mixopteridae
Eurypterida - Pterygotidae
Eurypterida - Rhenopteridae
Eurypterida - Parastylonuridae
Eurypterida
Chasmataspidida
unclassified
Bunodes sp. Eichwald 1859
Malacostraca - Archaeostraca
see common names

Geography
Country:Norway
Coordinates: 60.2° North, 10.3° East (view map)
Paleocoordinates:0.5° North, 49.7° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period: Silurian Epoch: Wenlock
Stage: Homerian 10 m.y. bin: Silurian 2
*International age/stage:Late/Upper Sheinwoodian - Early/Lower Homerian
Key time interval: Rootsikula
Age range of interval: 428.6 - 426.7 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Sundvollen
Stratigraphic resolution:bed
Stratigraphy comments: "Close to the Wenlock-Ludlow boundary."
Lithology and environment
Primary lithology:gray,green sandstone
Secondary lithology: "carbonate"
Includes fossils?Y
Lithology description: "...a succession of red and greyish-green sandstones and black shales interbedded with marine carbonates. The main fossil horizon is found in a 3 cm thick, grayish green, fine-grained sandstone lens and shows a total lcak of marine shelly fossils."
Environment:marine indet.
Geology comments: "Turner and Turner (1974) interpret the environment...as marine intertidal and tidal flats...[There are] well preserved and articulated...fish [imply] fauna was deposited in very quiet water, nearshore, marine (probably lagoonal and brackish) environment. The comm. is assigned to BA 1. [There are numerous land plant spores, however.]"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:paleoecologic analysis
Collection method comments: A number of taxa have abundance assessments (rare, common, very common).
Taxonomic list comments:Some taxa not listed ("...and other species..."). Numerous vertebrates are included.
Metadata
Database number:14308
Authorizer:M. Foote, J. Flannery-Sutherland Enterer:M. Foote, J. Flannery-Sutherland
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-05-30 14:43:54 Last modified:2025-02-22 15:12:02
Access level:the public Released:2002-05-30 14:43:54
Creative Commons license:CC0
Reference information

Primary reference:
6308. B. G. Baarli, H. B. Keilen, and M. E. Johnson. 1999. Silurian communities of the Oslo Region, Norway. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 327-349 [M. Foote/M. Foote/P. Wagner]