This paper deals with the first records of crustaceans of the orders Notostraca and Conchostraca from the Middle Ordovician of Norway. Two new species of notostracans are described, viz. Technophorus stoermeri and Ischyrinia norvegica, and furthermore Eoasmussia heintzi n.gen. et sp. of the order Conchostraca.
The Middle Ordovician of the Oslo Region, Norway. 12. Notostraca and Conchostraca.