Major morphological features of the shell are studied, and new trachyceratid genera, Boreotrachyceras gen. nov. with the type species B. omkutchanicum (Bytschkov) and Okhototrachyceras gen. nov. with the type species O. seimkanense (Bytschkov), are established based on material from the Lower Carnian of the Omolon Massif and Northern Okhotsk Region. The first record of the genus Trachyceras in the Boreal Realm allows the correlation of the omkutchanicum Zone of Northeastern Asia with the standard aon Zone. © 2012 Pleiades Publishing, Ltd.
CITATION STYLE
Konstantinov, A. G. (2012). A revision of the Early Carnian Trachyceratidae (Ammonoidea) of Northeastern Asia. Paleontological Journal, 46(5), 453–460. https://doi.org/10.1134/S0031030112050048
Mendeley helps you to discover research relevant for your work.