Kobayashi, F. (2022). Moscovian (Middle Pennsylvanian) Foraminifers and Biostratigraphy of the Ichinotani Formation, Hida Marginal Terrane, Japan. Paleontological Research. 27(2): 160-181.

440143

10.2517/pr210013 [view]

Kobayashi, F.

2022

27(2): 160-181

Publication

The Moscovian part of the Ichinotani Formation is subdivided into six fusuline zones from lower to upper, Fusulinella kamitakarensis, Fusulina? sp., Fusulinella hanzawai–Fusulina kamensis, Fusulinella rhomboidalis–Protriticites ovatus, Beedeina lanceolata, and Fusulinella rhomboidalis–Fusulinella soligalichi. The strata underlying the first zone, previously assigned to the Moscovian, are reassigned to the upper part of the Bashkirian. Age-diagnostic species are scarce in the possibly Kashirian F. kamitakarensis Zone and are absent in the F.? sp. Zone. The third to the sixth zones are correlated to the Podolskian, Myachkovian, Podolskian, and Myachkovian of the stratotypes in the Russian Platform, respectively. The fourth zone is inferred to be fault bounded with the fifth zone. The sixth zone is overlain by the lower part of the Kasimovian Protriticites variabilis Zone. Twenty species of fusulines and five species of non-fusuline foraminifers are described. Newly proposed herein are Pseudojanischewskina titanica, Bradyinelloides paranautiliformis, and Fusulinella igoi.

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