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The top documents tagged [bony fish scales]
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Introduction to Fish. What are Fish? Fish are aquatic vertebrates (animals with backbones) with fins for appendages. They "breathe" by means of gills
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Paleozoic Era 570,000,000 years ago to 225,000,000 years ago Life starts in the seas and moves onto land Six periods: Cambrian Ordovician Silurian Devonian
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