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USGS 1:24K Quadrangle
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Featured collections Specimens Fossils Horsetails
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22 resources
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Horsetails

TIF
ED2723 Annularia stellata horsetail
ED2723 Annularia stellata...  
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ED1236 Sphenophyllum emarginatum horsetail
ED1236 Sphenophyllum...  
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ED0317 Pecopteris sp. with Sphenopyllum sp. and Calamites sp.
ED0317 Pecopteris sp. with...  
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ED0306 Neuropteris sp. with Sphenophyllum sp.
ED0306 Neuropteris sp....  
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ED0303 Sphenopteris sp. with Sphenophyllum sp.
ED0303 Sphenopteris sp....  
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ED2872 Calamites sp. horsetail
ED2872 Calamites sp. horsetail  
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ED2753 Calamites sp. horsetail
ED2753 Calamites sp. horsetail  
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ED1240 Calamites sp. horsetail
ED1240 Calamites sp. horsetail  
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ED1239 Calamites sp. (form Annularia) horsetail
ED1239 Calamites sp. (form...  
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ED0395 Calamites sp. horestail
ED0395 Calamites sp. horestail  
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ED0367 Calamites sp. (form Annularia) horsetail
ED0367 Calamites sp. (form...  
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ED0365 Calamites sp. (form Annularia) horsetail
ED0365 Calamites sp. (form...  
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ED0357 Calamites sp. horsetail
ED0357 Calamites sp. horsetail  
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ED0356 Calamites sp. horsetail
ED0356 Calamites sp. horsetail  
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ED0355 Calamites sp. horsetail
ED0355 Calamites sp. horsetail  
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ED0354 Calamites sp. horsetail
ED0354 Calamites sp. horsetail  
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ED0353 Calamites sp. horsetail
ED0353 Calamites sp. horsetail  
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ED0344 Calamites sp. horsetail
ED0344 Calamites sp. horsetail  
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ED0316 Sphenopteris gracilis with Sphenophyllum
ED0316 Sphenopteris...  
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ED0295 Cyperites bicarinatus lycopod with Calamites sp. (form Annularia) horsetail
ED0295 Cyperites...  
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ED1189 Calamites sp. (form Annularia) horsetail
ED1189 Calamites sp. (form...  
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ED1309 Calamites carinatus horsetail
ED1309 Calamites carinatus...