Lane, P.D, P.R Dawes, and J.S Peel. 1980. “A New Silurian Hemiarges (Trilobita) from North Greenland and the Question of the Polaris Harbour Formation”. Rapport Grønlands Geologiske Undersøgelse 101 (December). Copenhagen, Denmark:45-53. https://doi.org/10.34194/rapggu.v101.7718.