Vol 41-50

Issue	Pages	Title	Authors

45(1)
No records
2	231-248	The Middle Ordovician of the Oslo Region, Norway. 18. Rare trilobites of the families Olenidae, Harpidae, Ityophoridae and Cheiruridae.	Frank Nikolaisen	View
43(1)
No records
3	345-399	The Middle Ordovician of the Oslo Region, Norway. 14. The trilobite family Telephinidae.	Frank Nikolaisen	View
41(1)
No records
2 3 4	279-309	The Middle Ordovician of the Oslo Region, Norway. 7. Trilobites of the suborder Cheirurina.	Frank Nikolaisen	View