ecofactbook
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species
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Animalia
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Arthropoda
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Trilobita
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Agnostida
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Weymouthiidae
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Acidiscus
Acimetopus
Analox
Bathydiscus
Bolboparia
Leptochilodiscus
Litometopus
Oodiscus
Serrodiscus
Stigmadiscus
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