Pencil Urchins (order)

Cidaroida

Pencil Urchins (Cidaroida) is a biological order of the phylum Echinodermata (Echinoderms) and class Echinoidea (Heart Urchins).

Classification

Families in the Order of Cidaroida

Cidaridae (family)
Psychocidaridae (family)

Orders in the Class of Echinoidea

Arbacioida (order) -
Arbacioida (order)
Cassiduloida (order) -
Cassiduloida (order)
Diadematoida (order) -
Diadematoida (order)
Echinoida (order) -
Echinoida (order)
Echinothurioida (order) -
Echinothurioida (order)
Heart Urchins (order) -
Heart Urchins (order)

Spatangoida

Holectypoida (order) -
Holectypoida (order)
Pedinoida (order) -
Pedinoida (order)
Pencil Urchins (order) -
Pencil Urchins (order)

Cidaroida

Phymosomatoida (order) -
Phymosomatoida (order)
Salenioida (order) -
Salenioida (order)
Sand Dollars (order) -
Sand Dollars (order)

Clypeasteroida

Temnopleuroida (order) -
Temnopleuroida (order)

External Links

Cidaroida – Wikipedia
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