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Polished slice of a petrified tree from the Late Triassic Epoch (approximately 230 million years ago) found in Arizona. The remains of insects can be
Polished slice of a petrified tree from the Late Triassic Epoch (approximately 230 million years ago) found in Arizona. The remains of insects can be detected in an enlarged image.
Petrified log at the Petrified Forest National Park
Petrified log at the Petrified Forest National Park
Microscopic view of petrified Callixylon wood
Microscopic view of petrified Callixylon wood
Petrified wood mineralized with carnotite from St. George, Utah
Petrified wood mineralized with carnotite from St. George, Utah
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Permineralized bryozoan from the Devonian of Wisconsin
Permineralized bryozoan from the Devonian of Wisconsin
External mold of a bivalve from the Logan Formation, Lower Carboniferous, Ohio
External mold of a bivalve from the Logan Formation, Lower Carboniferous, Ohio
Silicified (replaced with silica) fossils from the Road Canyon Formation (Middle Permian of Texas)
Silicified (replaced with silica) fossils from the Road Canyon Formation (Middle Permian of Texas)
Recrystallized scleractinian coral (aragonite to calcite) from the Jurassic of southern Israel
Recrystallized scleractinian coral (aragonite to calcite) from the Jurassic of southern Israel