Seby Limestone Assemblage (Ordovician of Sweden)

Also known as Seby Limestone Assemblage, Oland, Sweden

Where: Sweden (57.0° N, 17.0° E: paleocoordinates 37.1° S, 7.1° W)

• local area-level geographic resolution

When: Pseudoamplexograptus distichus graptolite zone, Seby Limestone Formation, Lasnamagi (463.5 - 460.9 Ma)

• Laufeldochitina striata chitinozoan zone & Pygodus serra conodont zone.

•Was entered as Late/Upper Llanvirn

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, argillaceous, calcareous limestone and sandstone

• Variegated red/brown and grey argillaceous limestone and fine, grey calcarenite

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2933: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 22.07.1999, edited by Torsten Liebrecht

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Illaenidae
Illaenus sp. Dalman 1827 trilobite
 Asaphida - Asaphidae
? Pseudobasilicus sp. Reed 1930 trilobite
originally entered as "Pseudobasilicus? sp."
Pseudoasaphus sp. Schmidt 1901 trilobite
 Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843 trilobite
 Asaphida - Nileidae
Nileus sp. Dalman 1827 trilobite
 Asaphida - Raphiophoridae
Ampyx sp. Dalman 1827 trilobite
Ostracoda
 Beyrichiacea - Tetradellidae
Steusloffia sp. Ulrich and Bassler 1908 ostracod
Tallinnella sp. Opik 1937 ostracod
 Palaeocopida -
Hyolitha
 Hyolithida - Hyolithidae
Hyolithes sp. d'Eichwald 1840
Cephalopoda
 Orthocerida -
Protobactrites sp. Hyatt in Zittel 1900
 Orthocerida - Clinoceratidae
Clinoceras sp. Mascke 1876
 Orthocerida - Baltoceratidae
Cochlioceras sp. Eichwald 1860
Bactroceras avus Holm 1898
 Orthocerida - Sinoceratidae
Rhynchorthoceras sp. Remelé 1882
 Orthocerida - Lituitidae
Lituites sp. Bertrand 1763
 Tarphycerida - Trocholitidae
Trocholites sp. Conrad 1838
Graptolithina
 Graptoloida -
 Bireclinata - Retiolitidae
 Bireclinata -
Climacograptus sp. Hall 1865 climacograptid
 Panreclinata - Dichograptidae
Didymograptus sp. McCoy 1851 graptoloid
Rhombifera
 Caryocystitidacea - Echinosphaeritidae
Echinosphaerites sp. Wahlenberg 1818