Echinozoa

Echinozoa Temporal range: Early Ordovician–Present PreꞒ Ꞓ O S D C P T J K Pg N
A sea cucumber among sea urchins in California, United States
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Subphylum:	Echinozoa
Classes
Echinoidea (sea urchins) Holothuroidea (sea cucumbers) †Ophiocistioidea † = Extinct

Echinozoa is a group of echinoderms. Echinoderms are animals that live in the sea. Animals in this group have a round body shape. They do not have arms or other limbs.

The two living groups today are sea urchins and sea cucumbers.

Types

• Echinoidea – sea urchins
• Holothuroidea – sea cucumbers
• †Ophiocistioidea – extinct group

† means the group no longer exists.

References

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