Where: Trøndelag, Norway (63.1° N, 10.0° E: paleocoordinates 31.5° S, 10.5° W)
• coordinate estimated from map
When: Didymograptus bifidus graptolite zone, Hølonda Formation, Early/Lower Llanvirn (468.0 - 461.1 Ma)
• Was Whiterockian-Llanvirn. However, Bergström (1979) notes that this is equivalent to the Anomalorthis zone of western North America. The fauna is more North American than Baltic.
• formation-level stratigraphic resolution
Environment/lithology: marine; siltstone
•The fossiliferous rock might be termed a silty argillite."
Size classes: macrofossils, mesofossils
Primary reference: R. B. Neuman and D. L. Bruton. 1974. Early Middle Ordovician fossils from the Hølonda area, Trondheim Region, Norway. Norsk Geologisk Tidsskrift 54:69-115 [B. Kröger/B. Kröger]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 191062: authorized by Björn Kröger, entered by Björn Kröger on 08.01.2018
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Macrocystella sp. Callaway 1877 | |
Cheirocrinus sp. Eichwald 1856 | |
Strophomenata | |
Aporthophyla stoermeri Neuman and Bruton 1974 | |
Syndielasma (cf. Syndielasma) biseptatum Cooper 1956 | |
Trotlandella loki Neuman and Bruton 1974 | |
Rhynchonellata | |
Trondorthis strandi Neuman and Bruton 1974 | |
Gastropoda | |
Phragmolites sp. Conrad 1838 snail | |
Tetranota (cf. Tetranota) bidorsata Hall 1847 snail | |
"Loxoplocus (Lophospira) sp." = Lophospira
"Loxoplocus (Lophospira) sp." = Lophospira Whitfield 1886 snail | |
Lytospira sp. Koken 1896 snail | |
Rostroconchia | |
Euchasma sp. Billings 1865 | |
Bivalvia | |
Deceptrix sp. Fuchs 1919 clam | |
Trilobita | |
Goniotelina broeggeri Strand 1932 trilobite | |
Calyptaulax sp. Cooper 1930 trilobite | |
Sphaerocoryphe sp. Angelin 1854 trilobite |