PALEOZOIC PLANTS
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Devonian
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Rhynie Chert, Scotland
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Salt River Canyon, Arizona
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Mississippian
(Early Carboniferous)
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Pulaski, Virginia
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Pennsylvanian
(Late Carboniferous)
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Steubenville, Ohio
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Shade, Ohio
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Promontory Butte,
Arizona
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Permian
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Sedona, Arizona
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Monument Valley, Arizona
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Fossil Creek, Arizona
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Skaar Ridge, Antarctica
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Homevale, Queensland, Australia
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Dunedo, NSW, Australia
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Cooyal, NSW, Australia
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