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Harker & Thorsteinsson |
1960 |
Permian rocks and faunas of Grinnell Peninsula, Arctic Archipelago.
Mem. Geological Survey Canada, 309: 1-89, fig.1-9, pl.1-15; Ottawa.
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Nassichuk |
1970 |
Permian ammonoids from Devon and Melville Islands, Canadian Arctic Archipelago.
Journal of Paleontology, 44 (1): 77-97, fig.1-13, tab.1-3, pl.19-22; Tulsa,Oklahoma.
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