Echinoidea: Verskil tussen weergawes

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| image = Tripneustes ventricosus (West Indian Sea Egg-top) and Echinometra viridis (Reef Urchin - bottom).jpg
| image_width = 250px
| image_caption = ''[[Tripneustes ventricosus]]'' en ''[[Echinometra viridis]]'',<br />twee speciesspesies ofvan tropiese see kastaiings
| regnum = [[AnimalAnimalia]]ia
| phylum = [[Echinodermata]]
| subphylum = [[Echinozoa]]