Silurian thelodont scales from North Greenland

Thelodont scales are recorded from samples of Silurian limestone from Hall Land, Washington Land and Peary Land, North Greenland. Faunas of probable Early Silurian age compare best with faunas from western Europe, while a fauna of Late Silurian (Pridoli) age from Hall Land can be compared with faunas from Arctic Canada and Tuva. The preoccupied names Logania Gross, 1967 and Katoporus Gross, 1967 are replaced by Loganella and Katoporodus, respectively.