Varied and well preserved trilobite fossils are described from Silurian reefs in North Greenland. The faunas comprise 23 new species, and four new genera. The large number of new taxa reflects a previous lack of sampling of Silurian reef trilobite biotas.

Helen E. Hughes and Alan T. Thomas are the authors of Special Papers in Palaeontology, Number 92, Trilobites from the Silurian Reefs in North Greenland, published by Wiley.