Authors Year Title
Catalano, Di_Stefano & Kozur 1991 Permian circumpacific deep-water faunas from the western Tethys (Sicily, Italy) - new evidences for the position of the Permian Tethys.
Palaeogeography, Palaeoclimatology, Palaeoecology, 87: 75-108,
Clifton 1942 Invertebrate faunas from the Blaine and the Dog Creek Formations of the Permian Leonard Series.
Journal of Paleontology, 16 (6): 685-699, pl.101-104; Tulsa,Oklahoma.
Ehiro 1995 Cephalopod fauna of the Nakadaira Formation (Lower Permian) in the Southern Kitakami Massif, Northeast Japan.
Transactions and Proceedings of the Palaeontological Society of Japan, n.ser., 179: 184-192, 6 figs.
Ehiro & Misaki 2005 Middle Permian ammonoids from the Kamiyasse-Imo district in the Southern Kitakami Massif, Northeast Japan.
Paleontological Research, 9: 1-14, 9 fig.
Ehiro 2008 Two genera of Popanoceratidae (Permian Ammonoidea) from the South Kitakami, Northeast Japan,with a note on the age of the Takakurayama Formation in the Abukuma Massif.
Bulletin Tohoku Univ. Museum 8:1-8
Hayasaka 1963 Some Permian Fossils from Southern Kitakami. III Ammonoidea.
Proceedings of the Japan Academy, 39: 594-599, 7 figs., Tokyo.
Ishibashi, Fujikawa & Nakornsri 1996 Permian Ammonoids from the Loei area, Northeast Thailand.
Memoirs of the Faculty of Science, Kyushu University, Series D, 29 (2): 175-196, 9 fig., 5 tab., pl.11-13, Fukuoka.
Kullmann & Ramovs 1980 Cephalopoden aus dem Oberkarbon (Gzhelium) und Unterperm der Karawanken.
Geologica at Palaeontologica, 14: 195-208, fig.1-5, pl.1-2; Marburg.
Leonova 1992 Ammonoidei. In: Leven,E.Ya., Leonova,T.B. & Dmitriev,V.Yu.: Perm' Darvaz-Zaalaiskoi zony Pamira: fuzulinidy, ammonoidei, stratigrafiya.
Trudy Paleontologicheskogo Instituta Rossiyskaya Akademiya Nauk, 253: 110-167, pl.29-32, figs.24-46; Moskva.
Nassichuk & Spinosa 1972 Early Permian (Asselian) ammonoids from the Hare Fiord Formation, Northern Ellesmere Island.
Journal of Paleontology, 46 (4): 536-544, fig.1-5, tab.1-3, 1pl.; Tulsa, Okla.
Nassichuk & Lin 1992 Ammonoids and Fusulinaceans near the Carboniferous-Permian boundary in the Canadian Arctic Archipelago
Permophiles, Subcomm.Permian Stratigraphy, 21:11-15, 1 tab.,
Ruzhencev 1939d Znachenie ontogeneza dlya estestvennoy sistematiki ammonitov. The significance of the ontogeny for the natural system of the ammonoids.]
Istvestiia Akademii Nauk SSSR, seriia biologicheskaia, 1: 13-32, fig.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.
Schindewolf 1934 Über zwei jungpaläozoische Cephalopodenfaunen von Menorca.
Abhandlungen der Gesellschaft  der Wissenschaften zu Göttingen, Mathematisch-Physikalische Klasse, III (10): 159-191, fig.1-4, pl.6; Göttingen.
Schindewolf 1939b Zur Kenntnis von Pericleites Renz und verwandter paläozoischer Ammoneen.
Jahrbuch der Preußischen Geologischen Landesanstalt, 59 (for 1938): 423-455, fig.1-17; Berlin.
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.
Sone & Leman 2000 Some Mid-Permian Fossils from Felda Mayam, Central Peninsular Malaysia.
Proceedings of Annual Geological Conference 2000, Penang (eds. G.H.Teh, J.J.Pereira & T.F.Ng, 143-149, 6 fig., 1 tab., Kuala Lumpur.
Sone, Leman & Ehiro 2001 Middle Permian cephalopods from central Peninsular Malaysia:implications for faunal migration through the southern Tethys.
Journal of Asian Earth Sciences, 19: 805-814, 11fig.
Tumanskaia 1935 Permskie ammonoidei r. Kubergandy i ikh stratigraficheskoe znachenie.
Trudy Tadzhiksko-Pamirskoi ekspeditsii, 31: 43-130, fig.1-24, pl.1-5;
Tumanskaia & Borneman 1937 O permskikh ammoneyakh Darvaza.
Byulleten' Moskovskaya obshchestva ispytatelei prirody, otdelenie geologii, 15 (2): 104-118, fig.1-5, pl.1; Moskva.
Tumanskaia 1939a Permskie ammonei Zaalayskogo khrebta i ikh zhachenie dlia stratigrafii Pamira.
Problemy paleontologii, 5: 93-137, fig.1-21, pl.1-7; Moskva.
Tumanskaia 1939b Permskie ammonei khrebta Petra I.
Problemy paleontologii, 5: 139-145, fig.1-2, pl.1; Moskva.
Tumanskaia 1949 O permskikh ammoneiakh Srednei Azii.
Byull. Moskovsk. Obshchestva isp. Prirody, Otd. Geologii, 24 (6): 49-84, fig.1-40, pl.1-6; Moskva.
Tumanskaia 1963 Permskie ammonei tsentral'nogo Pamira i ikh stratigraficheskoe znachenie.
Otd. geol.-geogr. nauk Akad. Nauk SSSR: 1-119, fig.1-48, pl.A,B,1-23; Moskva.
Wilson 1984 The goniatite Agathiceras (Mollusca: Cephalopoda) in the Lower Permian (Wolfcampian) of California.
Journal of Paleontology, 58 (1): 277-278, fig.1; Lawrence, Kansas.
Zhou 1989 Age of the Longyin Formation in Southwest Guizhou province.
Science in China (ser.B) 32: 1361-1370, 1 fig., 2 tabl., 1 pl.
Zhou & Liengjarern 2004 Lower Permian perrinitid ammonoid faunas from Thailand.
Journal of Paleontology, 78: 317-339, 18 fig., 4 tab., Lawrence, KS.