Bergström, Jan, and J. R. Ineson. 1988. “The Arthropod Trail Multipodichnus from the Upper Middle Cambrian (Holm Dal Formation) of Central North Greenland”. Meddelelser Om Grønland. Geoscience 20 (December):113–117. https://doi.org/10.7146/moggeosci.v20i.139891.