Authors Year Title
Nassichuk, Furnish & Glenister 1965 The Permian ammonoids from Arctic Canada.
Bulletin of the Geological Survey of Canada, 131: 1-56, fig.1-17, tab.1-7, pl.1-5; Ottawa.
Nassichuk 1995 Permian Ammonoids in the Arctic Regions of the World.
In: Scholle,P.A. et al.,eds., The Permian of Northern Pangea 1: 210-235, 10 fig., Berlin (Springer).