This is a scientifically unique and very rich collection of fossils – petrified micro- and macroorganisms of different geological periods. The most ancient finds represented by 435 million-year-old stromatoporoids, 200 million-year-old ammonite and belemnite fossils, a mammoth tusk and tooth and other finds of impressive size and appearance are on display in the permanent exposition.
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| Ammonite | Ammonite | Ammonite (Lithuania) |
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| Ammonite fragment | Belemnites | Mammoth tusk and tooth (Lithuania) |
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| Petrified araucaria tree (USA) | Petrified coral (Lithuania) | Petrified pepper tree (USA) |