This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
O. P. Smyshlyaeva, 2015 - New Lower Triassic ammonoids from South Primorye - Paleontological Journal (49), 111-120 (journal article, English)
J. Guex, 2010 - Spathian (Lower Triassic) ammonoids from western USA (Idaho, California, Utah and Nevada) - Mémoires de Géologie (49), 1-82 (serial monograph, English)
J. Guex, 2005 - Dix-huit nouveaux genres d’ammonites du Spathien (Trias inférieur) de l’ouest américain (Idaho, Nevada, Utah et Californie) : Note préliminaire - Bulletin de Géologie Lausanne (362), 1-32 (serial monograph, French)
J. J. Sepkoski, Jr., 2002 - A compendium of fossil marine animal genera - Bulletins of American Paleontology (363), 1-560 (serial monograph, English)
A. S. Dagis, 1996 - - Triasovaya Fauna Severo-Vostoka Azii (), 1-232 (book/book chapter, Russian)
E. T. Tozer, 1994 - Significance of Triassic stage boundaries defined in North America - Mémoires de Géologie Lausanne (22), 155-170 (journal article, English)
E. T. Tozer, 1994 - Canadian Triassic Ammonoid Faunas - Geological Survey of Canada Bulletin (467), 1-663 (serial monograph, )
H. Bucher, 1989 - Lower Anisian ammonoids from the northern Humboldt Range (northwestern Nevada, USA) and their bearing upon the Lower-Middle Triassic boundary - Eclogae Geologicae Helvetiae (82), 945-1002 (journal article, English)
A. S. Dagis, 1988 - Boreal'nye Pozdneolenekskie Ammonoidei - Trudy Instituta Geologii i Geofiziki (714), 1-135 (serial monograph, Russian)
N. K. Zharnikova, 1985 - Ammonoids of the Lower Triassic Columbites zone in the southern Primorye - Paleontological Journal (19), 27-33 (journal article, English)
E. T. Tozer, 1981 - Triassic Ammonoidea: Classification, evolution and relationship with Permian and Jurassic Forms - The Ammonoidea: The evolution classification, mode of life and geological usefulness of a major fossil group (), 66-100 (book/book chapter, English)
Y. D. Zakharov, 1978 - - Rannetriasovye ammonoidei vostoka SSSR (), 1-224 (book/book chapter, Russian)
B. Kummel, 1969 - Ammonoids of the late Scythian (Lower Triassic) - Bulletin of the Museum of Comparative Zoology (137), 311-702 (journal article, English)
C. Diener, 1907 - The Fauna of the Himalayan Muschelkalk - Palaeontologia Indica (15), 1-140 (serial monograph, English)
A. Hyatt, 1905 - The Triassic cephalopod genera of America - United States Geological Survey Professional Paper (40), 1-394 (serial monograph, English)