Abstract
The fusulinoidean species Monodiexodina matsubaishi (Fujimoto), thought formerly to be an index fossil of the lower Middle Permian M. matsubaishi Zone, was recovered from the Lepidolina multiseptata Zone in the Kamiyasse-Imo district, Southern Kitakami Massif, Northeast Japan. This indicates that the stratigraphic range of the genus Monodiexodina in the Southern Kitakami Massif should be extended upward into the Capitanian Stage of the upper Middle Permian, as in the southern Primorye.
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