The Marrellomorphs are arthropods known from the Cambrian to the early Devonian. They lacked mineralised hard parts, so are only known from areas of exceptional preservation, limiting their fossil distribution. - Wikipedia 30.07.2016
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The Marrellomorphs are arthropods known from the Cambrian to the early Devonian. They lacked mineralised hard parts, so are only known from areas of exceptional preservation, limiting their fossil distribution. - Wikipedia 30.07.2016
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