Three species of the Middle Permian echinoconchoide brachiopod Vediproductus from the Kamiyasse area, northeast Japan, V. mugenjin sp. nov., V. punctatiformis, and V. sp., are described, and their paleogeographic significance is discussed. V. mugenjin sp. nov. is characterized as having spine bands on both the outer and inner surface of the valve, showing a strong relief with a comparatively wide interval of each band and a typical sawtooth outline of spine bands in cross-sectional view. The stratigraphic and paleogeographic distributions suggest that the genus flourished in the Tethyan province and was possibly restricted to a lower latitude than warm-cool water transitional environment.
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