Vestre Svartøy, Lake Tyrifjorden: Pirgu, Norway

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tergomya - Kiringellida - Hypseloconidae
Palaeacmaea compressus Koken and Perner 1925
recombined as Pygmaeoconus compressus
Paragastropoda - Mimospirida - Clisospiridae
Clisospira christianieae n. sp. Koken and Perner 1925
Gastropoda - Euomphalina - Platyceratidae
Eunema rupestre (d'Eichwald 1856)
recombined as Cyclonema rupestre
Gastropoda - Euomphalina - Macluritidae
Lesueurilla expansa n. sp. Koken and Perner 1925
recombined as Maclurites expansa
Maclurites serpentrionalis Koken and Perner 1925
recombined as Maclurina serpentrionalis
Gastropoda - Euomphalina - Holopeidae
Holopea ampullacea d'Eichwald 1860
Euomphalus dissoluta n. sp. Koken and Perner 1925
synonym of Pachystrophia devexa
Gastropoda - Euomphalina - Helicotomidae
Euomphalopterus carinifer (Koken 1896)
recombined as Boucotspira carinifer
Gastropoda - Bellerophontida - Bucaniidae
Temnodiscus lindstroemi Koken and Perner 1925
recombined as Phragmolites lindstroemi
Euomphalopterus excavatus Koken and Perner 1925
recombined as Phragmolites excavatus
Conradella pinguis n. sp. Koken and Perner 1925
recombined as Megalomphala pinguis
Megalomphala carinata Ebbestad 1999
Ebbestad 1999
Based on some of the specimens id'ed as T. lindstrøemi
Gastropoda - Murchisoniina - Subulitidae
Subulites (Cyrtospira) ornatus n. sp. Koken and Perner 1925
recombined as Cyrtospira ornatus
Subulites subula Koken 1896
Gastropoda - Murchisoniina - Lophospiridae
Worthenia aista Koken 1896
synonym of Ruedemannia lirata
Worthenia vermetus Koken 1897
recombined as Loxoplocus vermetus
Gastropoda - Murchisoniina - Loxonematidae
Loxonema infrasilurica n. sp. Koken and Perner 1925
Loxonema broeggeri n. sp. Koken and Perner 1925
Gastropoda - Murchisoniina - Gosseletinidae
Globispira pillula n. sp. Koken and Perner 1925
recombined as Cataschisma pillula
Gastropoda - Murchisoniina - Eotomariidae
Eotomaria rupestris n. sp. Koken and Perner 1925
recombined as Paraliospira rupestris
Gastropoda - Murchisoniina - Hormotomidae
Murchisonia meyendorfi Koken 1897
recombined as Hormotoma meyendorfi
Murchisonia insignis d'Eichwald 1860
recombined as Hormotoma insignis
Anthozoa - Stauriida - Streptelasmatidae
Densigrewingkia pyrgoidea Neuman 1969
Neuman 1969
Streptelasma primum Wedekind 1927
Neuman 1969
Bodophyllum euthum Neuman 1969
Neuman 1969 3 specimens
see common names

Geography
Country:Norway State/province:Ringerike
Coordinates: 60.1° North, 10.2° East (view map)
Paleocoordinates:29.2° South, 9.3° West
Geographic resolution:local area
Time
Period:Ordovician Epoch:Late/Upper Ordovician
Stage:Katian 10 m.y. bin:Ordovician 5
Key time interval:Pirgu Graptolite zone: Dicellograptus anceps
Age range of interval:449.60000 - 445.20000 m.y. ago
Stratigraphy
Formation:Bønsnes Member:Meristella crassa Schichten
Stratigraphic resolution:member
Stratigraphy comments: Updated from original source based on Ebbestad 1999.
Lithology and environment
Primary lithology: "limestone"
Secondary lithology: calcareous "shale"
Includes fossils?Y
Lithology description: Rubbly limestones with interbedded calcareous shales which have yielded the very diverse shelly faunas listed by Kiær (1897). The highest part of the formation comprises calcareous (>45cm thick) shales with scattered limestone nodules.
Environment:carbonate indet.
Taphonomy
Modes of preservation:body,replaced with calcite
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:154605
Authorizer:P. Wagner, B. Kröger Enterer:P. Wagner, B. Kröger
Modifier:P. Wagner Research group:marine invertebrate
Created:2014-02-24 21:27:28 Last modified:2014-11-25 13:05:08
Access level:the public Released:2014-02-24 21:27:28
Creative Commons license:CC BY
Reference information

Primary reference:
11503. E. Koken and J. Perner. 1925. Die Gastropoden des baltischen Untersilurs 1-324 [P. Wagner/P. Wagner/P. Wagner]

Secondary references:

15881 J.O.R. Ebbestad. 1999. Bucaniidae (Gastropoda) from the Upper Ordovician of Norway. Norsk Geologisk Tidsskrift 79:241-258 [P. Wagner/P. Wagner]
52013 B. Neuman. 1969. Upper Ordovician Streptelasmatid Corals from Scandinavia. Publications from the Palaeontological Institution of the University of Uppsala 77:1-73 [B. Kröger/B. Kröger]