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Echinoderms
Papers
- Echinoderms (University of California, Berkeley - Museum of Paleontology)
Provides pictures and descriptions of echinoderms., such as starfish. They do not age and they can regenerate their bodies and they have survived as a species for over 500 million years. 4-02
- Echinoderms - Sunflower Star Pycnopodia helianthoides (Enature.com)
Provides pictures and a description of one of the largest sea stars. 4-02
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