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

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Pterolepis nitidus
Pharyngolepis oblongus
Pharyngolepis heintzi
Hirella gracilis
Malacostraca - Archaeostraca
Dictyocaris slimoni
Ostracoda - Leperditicopida
Kiaeria limuloides
Xiphosura - Xiphosurida
Xiphosurida indet. Latreille 1802
Mixopterus kiaeri
Stylonuroides dolichopteroides
Stylonurella reudemanni
Xiphosura - Xiphosurida - Adelophthalmidae
Nanahughmilleria norvegica
original and current combination Hughmilleria (Nanahughmilleria)
Xiphosura - Xiphosurida
Brachyopterella pentagonalis
Xiphosura - Xiphosurida - Pterygotidae
Pterygotus holmi
Xiphosura - Xiphosurida
Bunodes sp.
Gastropoda - Cephalaspida - Ateleaspidae
Ateleaspis sp. Traquair 1889
Rhyncholepis parvulus
Thelodus laevis (Pander 1856)
Agnatha - Loganelliformes - Loganelliidae
Logania martinssoni Gross 1967
recombined as Paralogania martinssoni
Phlebolepidiformes - Katoporididae
Phlebolepis elegans Pander 1856
Logania cf. taiti (Stetson 1931)
see common names

Coordinates: 60.2° North, 10.3° East (view map)
Paleocoordinates:16.8° South, 7.6° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
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:426.20000 - 422.90000 m.y. ago
* legacy (obsolete) database fields
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 marine intertidal and tidal flats...[There are] well preserved and [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.]"
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.
Database number:14308
Authorizer:M. Foote Enterer:M. Foote
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-05-30 14:43:54 Last modified:2018-07-19 13:25:48
Access level:the public Released:2002-05-30 14:43:54
Creative Commons license:CC BY
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]