| A shell Scientific name: unidentified |
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| Species | Mollusca Bivalvia (Pelecypoda) |
| Place | Choshi, Chiba (Naarai Formation) |
| Epoch | Cenozoic Tertiary Pliocene |
| Size | Width 3.2 cm, Height 2.1 cm |
| File No. | CH002 |
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| Back | |
| A shell Scientific name: unidentified |
|
| Species | Mollusca Bivalvia (Pelecypoda) |
| Place | Choshi, Chiba (Naarai Formation) |
| Epoch | Cenozoic Tertiary Pliocene |
| Size | Width 3.2 cm, Height 2.1 cm |
| File No. | CH002 |
|
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| Back | |