Nanahughmilleria norvegica-Ostracoderm Comm. at Rudstangen, Ringerike Dist. (Silurian of Norway)

Where: Norway (60.2° N, 10.3° E: paleocoordinates 16.8° S, 7.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Sundvollen Formation, Rootsikula (426.2 - 422.9 Ma)

• "Close to the Wenlock-Ludlow boundary."

• bed-level stratigraphic resolution

Environment/lithology: marine; gray, green sandstone and carbonate

• "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.]"
• "...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."

Size class: macrofossils

Collection methods: A number of taxa have abundance assessments (rare, common, very common).

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14308: authorized by Michael Foote, entered by Michael Foote on 30.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Some taxa not listed ("...and other species..."). Numerous vertebrates are included.
unclassified
  -
Xiphosura
 Xiphosurida -
Xiphosurida indet. Latreille 1802
Euchelicerata
 Eurypterida -
Stylonuroides dolichopteroides Størmer 1934 eurypterid
 Eurypterida - Parastylonuridae
 Eurypterida - Rhenopteridae
Brachyopterella pentagonalis Størmer 1934 eurypterid
 Eurypterida - Adelophthalmidae
Nanahughmilleria norvegica Kiaer 1911 eurypterid
 Eurypterida - Mixopteridae
Mixopterus kiaeri Størmer 1934 eurypterid
 Eurypterida - Pterygotidae
Pterygotus holmi Størmer 1934 eurypterid
 Chasmataspidida -
Kiaeria limuloides Størmer 1934
 Euchelicerata -
Bunodes sp. Eichwald 1859
Malacostraca
 Archaeostraca -
 Thelodontida - Coelolepidae
Thelodus laevis Pander 1856
Anaspida
  -
Agnatha
 Loganelliformes - Loganelliidae
"Logania martinssoni" = Paralogania martinssoni
"Logania martinssoni" = Paralogania martinssoni Gross 1967 jawless fish
Gnathostomata
 Phlebolepidiformes - Katoporididae
Phlebolepis elegans Pander 1856
Petromyzontida
  -
Ateleaspis sp. Traquair 1889
Logania taiti
  -
Logania cf. taiti Stetson 1931