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Suborder:
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Agoniatitina
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Superfamily:
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Agoniatitoidea
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Family:
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Agoniatitidae
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Genus:
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Agoniatites
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Species:
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bicanaliculatus |
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Qualifier:
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ss |
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Author:
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Sandberger 1850-56,p.295
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Lower Boundary:
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australis--kockelianus Zone [04,80], 393.8 million years
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Upper Boundary:
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MD2A--MD2B: undul.--molarium Z. [13,00], 390.6 million years
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