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Holasteroida is an
order of
irregular sea urchins.
These irregular sea
urchins are
characterized by a
particularly marked bilateral symmetry, including...
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Clypeasteroida (sand dollars)
Order Holectypoida Superorder Atelostomata Order Holasteroida Order Spatangoida (heart urchins)
Aspidodiadema hawaiiense, an Aspidodiadematoida...
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Echinothurioida Infraclass Irregularia Superorder Atelostomata Order Holasteroida Order Spatangoida Order Echinoneoida Order Holectypoida†
Superorder Neognathostomata...
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Collyritidae d'Orbigny, 1853 †
fossil family Disasteridae Gras, 1848 †
order Holasteroida order Spatangoida fossil family Tithoniidae Mintz, 1968 †
fossil genus...
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secondarily bilateral-symmetrical and like
other representatives of the
taxon Holasteroida they lack the
lantern of Aristotle,
which is
typical for many
other sea...
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Clypeus plotti, Irregularia,
Middle Jur****ic, c. 162 mya Echinocorys,
Holasteroida,
Upper Cretaceous, c. 80 mya
Echinolampas ovalis, C****iduloida, Middle...
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meudonensis MHNT
Scientific classification Kingdom:
Animalia Phylum:
Echinodermata class:
Echinoidea Order:
Holasteroida Family:
Holasteridae Genus: Echinocorys...
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Collyritidae d'Orbigny, 1853
Family †
Disasteridae Gras, 1848
order Holasteroida (Durham & Melville, 1957)
order Spatangoida (L. Ag****iz, 1840) Family...
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Eukaryota Kingdom:
Animalia Phylum:
Echinodermata class:
Echinoidea Order:
Holasteroida Family:
Urechinidae Genus:
Antrechinus Species: A. mortenseni Binomial...
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Eukaryota Kingdom:
Animalia Phylum:
Echinodermata class:
Echinoidea Order:
Holasteroida Family:
Urechinidae Genus:
Antrechinus Species: A. nordenskjoldi Binomial...
