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Pleistocene fresh water sponges porifera spongillidae from the katata formation of the kobiwako group shiga prefecture central japan



Pleistocene fresh water sponges porifera spongillidae from the katata formation of the kobiwako group shiga prefecture central japan



Journal of Earth Sciences Nagoya University 31: 1-16



The sponge remains, Eunapius fragilis (Leidy) and Ephydatia muelleri (Lieberkuehn) were collected from the 2 localities of 2 stratigraphic horizons in the Middle Pleistocene Katata Formation in the Katata Hills, west of Lake Biwa, Central Japan. These 2 sponges are the living species which was included in the family Spongillidae. Fossil Eunapius fragilis (Leidy) was preserved on the exterior surface of Cipangopaludina japonica (v. Martens), Heterogen longispira (Smith), Sinanodonta sp. and of a wooden fragment. Fossil Ephydatia muelleri (Lieberkuehn) was discovered in massive clay in situ. The occurrence of a body fossil of a freshwater sponge has never been recorded in Japan.

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Accession: 006135657

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