Groenlandaspis
In Depth        Groenlandaspis was first discovered in Greenland,†‬but since this time individual specimens have been found from across Europe,†‬Australia and Antarctica,†‬indicating a possibly global distribution of this genus.†‬Groenlandaspis was an arthrodire placoderm,†‬which means that it had a jointed neck,†‬something that allowed arthordire placoderms to open their mouths very†‬wide.†… Read more