Paleontological Journal

, Volume 46, Issue 5, pp 453–460

A revision of the Early Carnian Trachyceratidae (Ammonoidea) of Northeastern Asia


DOI: 10.1134/S0031030112050048

Cite this article as:
Konstantinov, A.G. Paleontol. J. (2012) 46: 453. doi:10.1134/S0031030112050048


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.


revisionEarly CarnianTrachyceratidaeAmmonoideaNortheastern Asia

Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  1. 1.Trofimuk Institute of Petroleum Geology and Geophysics, Siberian BranchRussian Academy of SciencesNovosibirskRussia