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Suborder:
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Goniatitina
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Superfamily:
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Gastrioceratoidea
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Family:
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Homoceratidae
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Subfamily:
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Homoceratinae
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Genus:
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Homoceras
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Species:
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undulatum |
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Qualifier:
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ss |
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Author:
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Brown 1841,p.213
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Lower Boundary:
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Arnsbergian--Chokierian [ARN--CHO], 319 million years
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Upper Boundary:
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Alportian--Kinderscoutian [ALP--KIN], 317 million years
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