Tøyen underground station, Oslo, Hagastrand member (Ordovician to of Norway)

Where: Norway (59.9° N, 10.8° E: paleocoordinates 37.1° S, 14.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Megistaspis (Paramegistaspis) planilimbata trilobite zone, Hagastrand Member (Tøyen Formation), Tremadocian to Tremadocian (485.4 - 470.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; limestone

Size classes: macrofossils, mesofossils

Primary reference: O. A. Hoel. 1999. Trilobites of the Hagastrand Member (Tøyen Formation, lowermost Arenig) from tbe Oslo Region, Norway, Part Il : Remaining non-asaphid groups. Norsk Geologisk Tidsskrift 79:259-280 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 190982: authorized by Björn Kröger, entered by Björn Kröger on 02.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Agnostida - Metagnostidae
Arthrorhachis sp. Hawle and Corda 1847 trilobite
 Ptychopariida - Shumardiidae
"Shumardia nericiensis" = Shumardia (Conophrys) nericiensis
"Shumardia nericiensis" = Shumardia (Conophrys) nericiensis Wiman 1905 trilobite
 Asaphida - Asaphidae
Megalaspides nericiensis Wiman 1905 trilobite
Megistaspis (Ekeraspis) armata Tjernvik 1956 trilobite
Niobe (Niobella) bohlini Tjernvik 1956 trilobite
Niobe (Proxiniobe) longicauda Hoel 1999 trilobite
 Asaphida - Remopleurididae
Robergiella sp. Whittington 1959 trilobite
 Asaphida - Cyclopygidae
Pricyclopyge sp. Richter and Richter 1954 trilobite
 Asaphida - Nileidae
Symphysurus angustatus Sars and Boeck 1838 trilobite