The continents Laurentia and Baltica collided between 450 and 400 Ma, during the Caledonian Orogeny, to form Laurussia (also known as Euramerica).
Əkalan wən Laurentia əd Baltica aqalan ayertayan daɣ 450 har 400 Ma, ɣur anminak wan əalédonientan, fal igi wan Laurussie (intadaɣ sitawan Euramérique).