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Suborder:
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Goniatitina
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Superfamily:
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Goniatitoidea
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Family:
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Goniatitidae
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Genus:
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Goniatites
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Species:
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spirifer |
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Qualifier:
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ss |
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Author:
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Roemer 1850,p.51
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Lower Boundary:
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DER fimbriatus--spirifer/striatus, 330.7 million years
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Upper Boundary:
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DER Go beta striatus--Go beta falcatus, 329.4 million years
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