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Back |
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| Minerals |
Rocks |
| Mineral
Gallery |
Rock Hounds |
| Gemstones |
Rocks Rock! |
| Gem Gallery |
USGS: Rocks |
| Birthstones |
Mineralogy 4 Kids |
| Minerals A-Z |
Rock Key |
| Mineral and Gemstone
Kingdom |
Rocks and Minerals Slide Show |
| Smithsonian Gem & Mineral Collection |
Igneous
Metamorphic Sedimentary |
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Rock Wordsearch |
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Rock Picture Gallery |
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Rock
Info |
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Fossils |
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| Ordovician Period |
| Ordovician Fossils from Southeast
Indiana |
| Life of the Ordovician |
| Making Fossils |
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| Bryozoa (Moss Animals) |
Horn
Coral |
| Ordovician Bryozoan Fossils |
Rugosa: Horn Coral |
| Bryozoa of the
Cincinnatian |
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| Crinoids |
Mollusca (Sea shells) |
| Class:Crinoidea |
Pelecypods |
| Cincinnatian Crinoids |
Gastropods |
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Cephalopods |
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Brachiopoda (lamp shells) |
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| Ordovician Brachiopod
Fossils |
Trilobites |
| Brachiopods
of the Cincinnatian |
What
are Trilobites? |
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Cincinnatian Trilobites |
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Picture
Gallery |
Ordovician Trilobite Photos |
| Fossil Slideshow |
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