Nakrem Hans Arne, Orchard Michael J., Weitschat Wolfgang, Hounslow Mark W., Beatty Tyler W., and Mørk Atle. 2008. “Triassic Conodonts from Svalbard and Their Boreal Correlations”. Polar Research 27 (3):523-39. https://doi.org/10.3402/polar.v27i3.6190.