South of Røykenvik, 4bβ - γ zone (Ordovician to of Norway)

Where: Hadeland, Norway (60.4° N, 10.5° E: paleocoordinates 31.5° S, 9.8° W)

• coordinate estimated from map

When: Frognerkilen - Nakholmen Formation, Keila to Keila (460.9 - 452.0 Ma)

• "4bβ - γ"

• formation-level stratigraphic resolution

Environment/lithology: marine; limestone

Size classes: macrofossils, mesofossils

Primary reference: H. Soot-Ryen and T. Soot-Ryen. 1960. The Middle Ordovician of the Oslo region, Norway: 11, Pelecypoda. Norsk Geologisk Tidsskrift 40(2):81-122 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 194661: authorized by Björn Kröger, entered by Björn Kröger on 25.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Myalinida - Ambonychiidae
Clionychia undata Emmons 1842 clam
 Modiomorphida - Modiomorphidae
Modiolopsis sp. Hall 1847 clam
 Solemyida - Ctenodontidae
Ctenodonta sp. Salter 1852 clam