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  Arbacioida
Cidaroida
Clypeasteroida
  Diadematoida
Echinoida
Spatangoida
  Temnopleuroida


Sea Urchin Embryo
A page from the Laboratory of Embryonic Gene Expression, included here for three beautiful photographs.

The Echinoids
Information about sea urchins, such as how they live, feed, and reproduce. There is also an alphabetic listing of their taxa. From The Natural History Museum, London.

Sea Urchin Embryology
Laboratory modules using sea urchin eggs to explore fertilization and development.

Sea Urchin Extravaganza
Information on purple sea urchins and sea urchin fertilization.

Microscopic World of Urchin Development
Personal marine biology site with photomicrographs of urchin (Paracentrotus lividus) development.

Photos of Sea Urchins
Photos of Echinoidea from the Indo-Pacific, with text about behavior, habitat, and characteristics.

Mellita quienquesperforata
The anatomy of a sand dollar.


Science: Biology: Developmental Biology: Model Organisms: Sea Urchin






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