Nakrem H. A., Orchard M. J., Weitschat W., Hounslow M. W., Beatty T. W., & Mørk A. (2008). Triassic conodonts from Svalbard and their Boreal correlations. Polar Research, 27(3), 523-539. https://doi.org/10.3402/polar.v27i3.6190