Authors Year Title
Furnish & Glenister 1970 Permian Ammonoid Cyclolobus from the Salt Range, West Pakistan in Kummel,B. & Teichert,C. (eds): Stratigraphic boundary problems: Permian and Triassic of West Pakistan.
University of Kansas Department of Geology Special Publication 4: 153-175, fig.1,2, tab.1,2, pl.1-4.
Furnish, Glenister & Kummel 1976 Reinterpretation of ceratitic ammonoids from the Grevelle Formation, New Zealand.
Geological Magazine, 113: 39-46, 1 fig., London.
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.