Bear Island, Tetradium limestone (Ordovician of Norway)
Where: Norway (74.5° N, 19.0° E: paleocoordinates 74.5° N, 19.0° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Tetradium limestone Formation, Middle Ordovician (470.0 - 458.4 Ma)
Environment/lithology: reef, buildup or bioherm; dolomite
• rather dark, weathered more light-colored dolomite here are not seldom seen irregularly silicified fossils, poorly preserved
Size classes: macrofossils, mesofossils
Primary reference: O. Holtedahl. 1920. On the Paleozoic series of Bear Island, especially on the Heclahook system. Norsk Geologisk Tidsskrift 5:121-148 [W. Kiessling/M. Krause/M. Krause]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 154903: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 18.03.2014, edited by Qijian Li
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Crinoidea | |
|
Crinoidea indet. Miller 1821 Sea lily | |
| Cephalopoda | |
Gonioceras nathorsti n. sp.
Gonioceras nathorsti n. sp. | |
|
Actinoceras sp. Bronn 1837 | |
|
? Orthoceras sp. Breynius 1832 | |
"Piloceras cf. explanator" = Cassinoceras wortheni
"Piloceras cf. explanator" = Cassinoceras wortheni Billings 1865 | |
| Gastropoda | |
|
Gastropoda indet. Cuvier 1795 snail | |
|
Maclurites (Maclurea) sp. Le Sueur 1818 snail | |
|
Lophospira sp. Whitfield 1886 snail | |
|
? Liospira sp. Ulrich and Scofield 1897 snail | |
| Bryozoa | |
|
Bryozoa indet. Ehrenberg 1831 | |
| Radiocyatha | |
|
Calathium cf. pannosum The fragment figured with its partly flat, partly slightly convex form certainly rerninds of BILLINGS Calathium pannosum (see Palæozoic Fossils, I , p. 335, fig. 324).
| |
| Demospongiae | |
|
Archaeoscyphia ? minganensis Billings 1859 demosponge | |