Lower Arenig Limestone composite, Lake Siljan region, Sweden (Ordovician of Sweden)

Where: Sweden (61.0° N, 15.0° E: paleocoordinates 36.1° S, 9.8° W)

• local area-level geographic resolution

When: Arenig (478.6 - 466.0 Ma)

Environment/lithology: offshore shelf; lithified, glauconitic limestone

• Variegated limestone with glauconite

Primary reference: T. E. Tjernvik. 1956. On the Early Ordovician of Sweden stratigraphy and fauna. Bulletin of the Geological Institutions of the University of Uppsala 36(6):109-284 [A. Miller/P. Novack-Gottshall/A. Clement]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3198: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 27.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Endocerida - Endoceratidae
? Endoceras sp.
? Endoceras sp. Hall 1847
originally entered as "Endoceras? sp."
Rhynchonellata
 Orthida - Lycophoriidae
Lycophoria sp.
Lycophoria sp. Lahusen 1885
 Orthida - Eoorthidae
? Apheoorthis sp.
? Apheoorthis sp. Ulrich and Cooper 1936
originally entered as "Apheoorthis? sp."
 Orthida - Plectorthidae
? Nanorthis sp.
? Nanorthis sp. Ulrich and Cooper 1936
originally entered as "Nanorthis? sp."
Lingulata
 Lingulida - Obolidae
Obolus sp.
Obolus sp. Eichwald 1829
Trilobita
 Asaphida - Asaphidae
Megistaspis sp., Megalaspides sp., "Plesiomegalaspis sp." = Asaphellus, Hunnebergia sp., Promegalaspides sp., Niobe sp., "Niobella sp." = Niobe (Niobella), Lapidaria sp.
Megistaspis sp. Jaanusson 1956 trilobite
Megalaspides sp. Brögger 1886 trilobite
"Plesiomegalaspis sp." = Asaphellus Callaway 1877 trilobite
Hunnebergia sp. Tjernvik 1956 trilobite
Promegalaspides sp. Westergård 1939 trilobite
Niobe sp. Angelin 1851 trilobite
"Niobella sp." = Niobe (Niobella) Reed 1931 trilobite
Lapidaria sp. Tjernvik 1956 trilobite
 Asaphida - Cyclopygidae
Cyclopyge sp.
Cyclopyge sp. Hawle and Corda 1847 trilobite
 Asaphida - Nileidae
Symphysurus sp., Varvia sp., Nileus sp.
Symphysurus sp. Goldfuss 1843 trilobite
Varvia sp. Tjernvik 1956 trilobite
Nileus sp. Dalman 1827 trilobite
 Trinucleida - Raphiophoridae
Ampyx sp.
Ampyx sp. Dalman 1827 trilobite
 Ptychopariida - Shumardiidae
Shumardia sp.
Shumardia sp. Billings 1862 trilobite
 Olenida - Eulomidae
Euloma sp.
Euloma sp. Angelin 1854 trilobite
 Corynexochida - Styginidae
Raymondaspis sp.
Raymondaspis sp. Pribyl 1948 trilobite
Artiopoda
 Agnostida - Metagnostidae
Geragnostus sp.
Geragnostus sp. Howell 1935