Seby Limestone Assemblage: Lasnamagi, Sweden

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhombifera - Echinosphaeritidae
Echinosphaerites sp. Wahlenberg 1818
Pterobranchia - Graptoloidea - Dichograptidae
Didymograptus sp. McCoy 1851
Pterobranchia - Graptoloidea - Abrograptidae
Abrograptus sp.
Pterobranchia - Graptoloidea - Climacograptidae
Pseudoclimacograptus sp.
Climacograptus sp. Hall 1865
Pterobranchia - Graptoloidea - Retiolitidae
Glyptograptus sp. Lapworth 1873
Hyolithida - Hyolithidae
Hyolithes sp. d'Eichwald 1840
Cephalopoda - Tarphycerida - Trocholitidae
Trocholites sp. Conrad 1838
Cephalopoda - Clinoceratidae
Clinoceras sp. Mascke 1876
Cephalopoda - Lituitida - Sinoceratidae
Rhynchorthoceras sp. Remelé 1882
Cephalopoda - Lituitida - Lituitidae
Lituites sp. Bertrand 1763
Cephalopoda - Protobactritidae
Protobactrites sp. Hyatt 1900
Cephalopoda - Orthocerida - Baltoceratidae
Cochlioceras sp. Eichwald 1860
Bactroceras sp. Holm 1898
    = Bactroceras avus Holm 1898
Evans 2005
1 specimen (syntype) no repository data given
Trilobita - Corynexochida - Illaenidae
Illaenus sp. Dalman 1827
Trilobita - Trinucleida - Raphiophoridae
Ampyx sp. (Dalman 1827)
Trilobita - Asaphida - Nileidae
Nileus sp. Dalman 1827
Trilobita - Asaphida - Asaphidae
Pseudoasaphus sp. Schmidt 1901
? Pseudobasilicus sp. Reed 1930
originally entered as "Pseudobasilicus? sp."
Trilobita - Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843
Ostracoda - Palaeocopida - Ctenonotellidae
Steusloffia sp. Ulrich and Bassler 1908
Ostracoda - Palaeocopida - Tvaerenellidae
Euprimites sp. Hessland 1949
Ostracoda - Palaeocopida - Tetradellidae
Tallinnella sp. Opik 1937
see common names

Geography
Country:Sweden
Coordinates: 57.0° North, 17.0° East (view map)
Paleocoordinates:37.1° South, 7.1° West
Geographic resolution:local area
Time
Period: Ordovician Epoch: Middle Ordovician
Stage: Darriwilian 10 m.y. bin: Ordovician 3
*Epoch:Late/Upper Llanvirn
Key time interval: Lasnamagi Graptolite zone:  Pseudoamplexograptus distichus
Age range of interval: 460.4 - 458.9 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Seby Limestone
Stratigraphic resolution:formation
Stratigraphy comments: Laufeldochitina striata chitinozoan zone & Pygodus serra conodont zone.

Was entered as Late/Upper Llanvirn
Lithology and environment
Primary lithology:red or brown lithified argillaceous,calcareous "limestone"
Secondary lithology: sandstone
Environment:deep subtidal shelf
Geology comments: Variegated red/brown and grey argillaceous limestone and fine, grey calcarenite
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Also known as:Seby Limestone Assemblage, Oland, Sweden
Database number:2933
Authorizer:A. Miller, B. Kröger Enterer:P. Novack-Gottshall, T. Liebrecht
Modifier:P. Wagner Research group:marine invertebrate
Created:1999-07-22 14:24:32 Last modified:2015-04-25 14:51:47
Access level:the public Released:1999-07-22 14:24:32
Creative Commons license:CC BY
Reference information

Primary reference:
104. V. Jaanusson. 1960. The Viruan (Middle Ordovician) of Oland. Bulletin of the Geological Institutions of the University of Uppsala 38:207-287 [A. Miller/P. Novack-Gottshall/A. Clement]

Secondary references:

29341 D. H. Evans. 2005. The Lower and Middle Ordovician cephalopod faunas of England and Wales. Monograph of the Palaeontographical Society 623:1-81 [B. Kröger/B. Kröger/B. Kröger]