Alabushev, A., & Wiedmann, J. (1997). Upper Cretaceous ammonites from southern Sakhalin and northwestern Kamchatka (North-East Russia). Palaeontographica, Abteilung A,
244(1–3), 1–36.
Google Scholar
Hayakawa, H., & Tashiro, M. (1994). Taxonomy, mode of occurrences and stratigraphic position of Polyptychoceras from the Himenoura Group. Research Report of Kochi University, Natural Science,
43, 167–176.
Google Scholar
Ifrim, C., Stinnesbeck, W., & Ventura, J. F. (2013). An endemic cephalopod assemblage from the Lower Campanian (Late Cretaceous) Parras Shale, Western Coahuila, Mexico. Journal of Paleontology,
87(5), 881–901.
Article
Google Scholar
International Commission on Zoological Nomenclature. (1999). International Code of Zoological Nomenclature, (4th ed.). London: International Trust for Zoological Nomenclature.
Google Scholar
International Commission on Zoological Nomenclature. (2003). Declaration 44—amendment of Article 74.7.3. Bulletin of Zoological Nomenclature,
60(4), 263.
Google Scholar
International Commission on Zoological Nomenclature. (2012). Amendment of Articles 8, 9, 10, 21 and 78 of the International Code of Zoological Nomenclature to expand and refine methods of publication. ZooKeys,
219, 1–10.
Article
Google Scholar
Jagt, J. W. M., Goolaerts, S., Jagt-Yazykova, E. A., Cremers, G., & Verhesen, W. (2006). First record of Phylloptychoceras (Ammonoidea) from the Maastrichtian type area, The Netherlands. Bulletin de l’Institut royal des Sciences naturelles de Belgique, Scienses de la Terre,
76, 97–103.
Google Scholar
Jimbō, K. (1894). Beiträge zur Kenntniss der Fauna der Kreideformation von Hokkaidō. Palæontologische Abhandlungen, neue Folge,
2(3), 149–194.
Google Scholar
Kruta, I., Rouget, I., Landman, N. H., Tanabe, K., & Cecca, F. (2009). Aptychi microstructure in Late Cretaceous Ancyloceratina (Ammonoidea). Lethaia,
42(3), 312–321.
Article
Google Scholar
Matumoto, T. (1938). A biostratigraphic study on the Cretaceous deposits of the Naibuti Valley, South Karahuto. Proceedings of the Imperial Academy,
14(5), 190–194.
Google Scholar
Matsumoto, T. (1963). A survey of the fossils from Japan illustrated in classical monographs, part X: Kotora Jimbō (1894): Beiträge zur Kenntniss der Fauna der Kreideformation von Hokkaidō. In Matsumoto, T. (Ed.), A survey of the fossils from Japan illustrated in classical monographs (primarily a nomenclatorial revision). Palaeontological Society of Japan, 25th Anniversary Volume (pp. 41–48). Tokyo: Palaeontological Society of Japan.
Matsumoto, T. (1977). Some heteromorph ammonites from the Cretaceous of Hokkaido (Studies of the Cretaceous ammonites from Hokkaido and Saghalien-XXXI). Memoirs of the Faculty of Science, Kyusyu University, Series D, Geology,
23(3), 303–366.
Google Scholar
Matsumoto, T., Hayami, I., & Asano, K. (1963). A survey of fossils from Japan illustrated in classical monographs, part VII: Matajiro Yokoyama (1890): Versteinerungen aus der japanischen Kreide. In Matsumoto, T. (Ed.), A survey of the fossils from Japan illustrated in classical monographs (primarily a nomenclatorial revision). Palaeontological Society of Japan, 25th Anniversary Volume (pp. 27–32). Tokyo: Palaeontological Society of Japan.
Matsumoto, T., & Nihongi, M. (1979). An interesting mode of occurrence of Polyptychoceras (Cretaceous heteromorph ammonoid). Proceedings of the Japan Academy, Series B,
55(3), 115–119.
Article
Google Scholar
Nagao, T. (1931a). New discovery of Aptychus in two species of ammonites from the Upper Cretaceous of Japan. Proceedings of the Imperial Academy,
7(4), 165–168.
Google Scholar
Nagao, T. (1931b). [On the Aptychus and Anaptychus from Japan (summary)]. Journal of the Geological Society of Tôkyô, 38(453), 331–332. [Original title in Japanese translated].
Nagao, T. (1931c). Anaptychus and Aptychus lately acquired from the Upper Cretaceous of Hokkaido, Japan. Journal of the Faculty of Science, Hokkaido Imperial University, Series 4, Geology and mineralogy,
1(2), 215–222.
Google Scholar
Okamoto, T., & Asami, K. (2002). Peculiar mode of occurrence and its preservational history of Polyptychoceras, a Cretaceous heteromorph ammonite. Fossils (Palaeontological Society of Japan), (71), 1–18.
Google Scholar
Okamoto, T., Okada, M., & Koizumi, S. (2013). Theoretical morphology of shell ornamentation in a Late Cretaceous heteromorph ammonite Polyptychoceras. Fossils (Palaeontological Society of Japan), (94), 19–31.
Google Scholar
Okamoto, T., & Shibata, M. (1997). A cyclic mode of shell growth and its implications in a Late Cretaceous heteromorph ammonite Polyptychoceras
pseudogaultinum (Yokoyama). Paleontological Research,
1(1), 29–46.
Google Scholar
Shigeta, Y., & Nishimura, T. (2013). A new species of the heteromorph ammonoid Phylloptychoceras from the lowest Maastrichtian of Hokkaido, Japan. Paleontological Research,
17(2), 173–178.
Article
Google Scholar
Shimizu, S. (1935a). The Upper Cretaceous cephalopods of Japan Part I. The Journal of the Shanghai Science Institute, Section II,
1(11), 159–226.
Google Scholar
Shimizu, S. (1935b). The Upper Cretaceous ammonites so-called Hamites in Japan. Proceedings of the Imperial Academy,
11(7), 271–273.
Google Scholar
Usher, J. L. (1952). Ammonite faunas of the Upper Cretaceous rocks of Vancouver Island, British Columbia. Geological Survey of Canada Bulletin,
21, 1–182.
Google Scholar
Whiteaves, J.F. (1879). Mesozoic Fossils, Vol. I, Part II, On the fossils of the Cretaceous rocks of Vancouver and adjacent Islands in the Strait of Georgia. Montreal: Dawson Brothers.
Wiedmann, J. (1962). Ammoniten aus der Vascogotischen Kreide (Nordspanien) I. Phylloceratina, Lytoceratina. Palaeontographica, Abteilung A,
118(4–6), 119–237.
Google Scholar
Wright, C.W., Calloman, J.H., & Howarth, M.K. (1996). Treatise on Invertebrate Paleontology, Part L Mollusca 4, Revised, Vol. 4, Cretaceous Ammonoidea. Boulder, Colorado, and Lawrence, Kansas: The Geological Society of America, Inc. and The University of Kansas.
Yabe, H. (1927). Cretaceous stratigraphy of the Japanese Islands. The science reports of the Tôhoku Imperial University, 2nd series (geology), 11(1), 27–100.
Yokoyama, M. (1890). Versteinerungen aus der japanischen Kreide. Palaeontographica,
36(4–6), 159–202.
Google Scholar