	Authors	Year	Title
	Blendinger, Furnish & Glenister	1992	Permian cephalopod limestones, Oman Mountains: evidence for a Permian seaway along the northern margin of Gondwana. Palaeogeography, Palaeoclimatology, Palaeoecology, 93: 13-20, 4 figs., Amsterdam.
	Davis	1972	Mature modifications and dimorphism in selected Late Paleozoic ammonoids. Bulletins of American Paleontology, 62 (272): 27-130, pls.3-21, Ithaca, NY.
	Ehiro, Shimoyama & Murata	1986	Some Permian Cyclolobaceae from the Southern Kitakami Massif, Northeast Japan. Transactions and Proceedings of the Palaeontological Society of Japan, N.S., 142: 400-408, fig.1-4, pl.79-80; Tokyo.
	Ehiro & Araki	1997	Permian cephalopods of Kurosawa, Kesennuma City in the Southern Kitakami Massif, Northeast Japan. Paleontological Research, 1 (1): 55-66, 9 figs., Tokyo.
	Hayasaka	1940	On Two Permian Ammonoids from the Kitakami Mountains, North Japan. Journal of the Geological Society of Japan, (565) 47: 422-427, 3 fig.
	Miller	1945a	Some exceptional Permian ammonoids from West Texas. Journal of Paleontology, 19 (1): 14-21, fig.1-3, pl.6-8; Tulsa,Oklahoma.
	Pillevuit	1993	Les Bloc Exotiques du Sultanat d'Oman. Evolution paléogéographique d'une marge passive flexurale. Mémoires de Géologie (Lausanne), 17: 1-249, 131 figs., 7 tabs., 7 pls., Lausanne.
	Ruzhencev	1938	Ammonei Sakmarskogo yarusa i ikh stratigraficheskoe znachenie. Problemy Paleontologii, 4: 187-285, fig.1-19, pl.1-7; Moskva.
	Schellwien	1898a	Bericht über die Ergebnisse einer Reise in die karnischen Alpen und die Karawanken. Sitzungsberichte der Preußischen Akademie der Wissenschaften in Berlin, 44: 693-700, Berlin.
	Schellwien	1898b	Die Auffindung einer permo-carbonischen Fauna in den Ostalpen. Verhandlungen der Geologischen Reichsanstalt in Wien, 1898: 358-363, Wien.
	Sheng	1988	Early Lower Permian ammonoids of the Urulung Formation from Luobadui, Xizang (Tibet). Tectonic evolution of the lithosphere of the Himalayas: 123-148, fig.1-11, pl.1-3; Beijing.
	Sheng	1988b	Late Lower Permian ammonoids of the Langcuo Formation from Angren district South Xizang (Tibet). Tectonic evolution of the lithosphere of the Himalayas: 149-180, fig.1-14, pl.1-5; Beijing.
	Sheng	1988c	New material of Early Permian ammonoids from Xizang and Qinghai. Professional Papers of Stratigraphy and Palaeontology, 20: 76-84, fig.1-5, pl.1; Beijing.
	Spinosa & Nassichuk	1971	The Permian ammonoid Stacheoceras discovered on Ellesmere Island, Canadian Arctic. Bulletin of the Geological Society of Canada, 197: 89-93, fig.17, pl.16; Ottawa.
	Vasicek & Kullmann	1988	Eine Ammonoideen-Fauna vom Sosio-Typ (Guadalupian, Ober-Perm) aus Kurdistan (Irak). Palaeontographica, Abt.A, 204 (1-3): 95-115, fig.1-5, pl.1-2; Stuttgart.
	Vasicek	1988	Upper Permian Ammonoidea from Kurdistan, NE Iraq. In: Wiedmann,J. & Kullmann,J. (eds.), Cephalopods - Present and Past, 577-591, 3 pls., 16 figs., Stuttgart.