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Taxon:
Class †
Helicoplacoidea
Durham & Caster, 1963
(echinoderm)
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Hierarchy
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Classification by:
(1998) Zoological Record
Boardman et al. (1987) Fossil Invertebrates
Systema Naturae 2000
Sepkoski (2002) A Compendium of Fossil Marine Animal Genera
Phylum
Echinodermata
Bruguière, 1789 - echinoderms
Class †
Helicoplacoidea
Durham & Caster, 1963
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Last updated:
1 Feb 2024