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Villoslada de Cameros, La Rioja, Spain
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Arredondo, Cantabria, Spain
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Arredondo, Cantabria, Spain
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Rumoroso, Cantabria, Espaa
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Muelas del Pan, Castille and Leon, Spain
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Miranda do Douro, Bragana, Portugal
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Laguna de Cameros, La Rioja, Spain
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Arredondo, Cantabria, Spain
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Ribadelago de Franco, Castilla y Len, Espaa
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Kingdom=Bacteria?Phylum=Cyanophyta?Family=Spongiostromata?Subfamily=Stromatolithi?Common name=Stromatolite?
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Arredondo, Cantabria, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Barrio Ballinas, Castille and Leon, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Arredondo, Cantabria, Spain
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Villoslada de Cameros, La Rioja, Spain
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Arredondo, Cantabria, Spain
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Arredondo, Cantabria, Spain
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Galende, Castille and Leon, Spain
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Caada del Hoyo, Castilla-La Mancha, Espaa
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Arredondo, Cantabria, Spain
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Arredondo, Cantabria, Spain
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Arredondo, Cantabria, Spain