Hubertschenckia Takeda 1953

Takeda 1953. Studies in Coal Geology No. 3. The Peronal formation (Oligo-cene Tertiary) of Hokkaido and South Sakhalin and its fossil fauna. Geol Sect Hokkaido Assoc Coal Mining Technology Sapporo Japan, 1953 1953: pp. 1-11, 1-103, 1-113, 1-45