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Blastoidea
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has an article on:
Blastoidea
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Wikispecies
has information on:
Blastoidea
Wikispecies
Proper noun
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Blastoidea
A taxonomic
class
within the
phylum
Echinodermata
–
blastoids
or
sea buds
, an
extinct
type of stemmed
echinoderm
, resembling
hickory
nuts.