ecofactbook
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species
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Animalia
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Echinodermata
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Echinoidea
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Camarodonta
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Toxopneustidae
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Gymnechinus
Lytechinus
Nudechinus
Pseudoboletia
Schizechinus
Scoliechinus
Sphaerechinus
Toxopneustes
Tripneustes
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Gymnechinus