Where: Eiker-Sandsvær, Norway (59.7° N, 9.7° E: paleocoordinates 37.0° S, 14.8° 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: green, silty shale and coarse-grained limestone
•facies of the Hagastrand Member, begins, however, with a thin, coarsely crystalline calcite layer, which gives way to more micritic limestone (mostly a marl) with horizontal and vertical intercalations of grey to black shale. All six main beds have a similar texture and, in hand specimens, the fossils occur randomly orientated in the rock. The lowest bed cleared in 1995 is overlain by 12 cm of unfossiliferous shale and then more 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 190974: authorized by Björn Kröger, entered by Björn Kröger on 02.01.2018
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Megalaspides nericiensis Wiman 1905 trilobite
Niobe (Niobella) bohlini Tjernvik 1956 trilobite
Promegalaspides (Borogothus) stenorachis Angelin 1851 trilobite | |
Artiopoda | |
Geragnostus (Geragnostella) wimani Tjernvik 1956 |