Kingdom Animalia Subphylum Homalozoa | Phylum Echinodermata Rank Class | |
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Similar Stylophora, Homalozoa, Ophiocistioidea, Paracrinoidea, Helicoplacus | ||
Homostelea is an extinct class of echinoderms that lived only in the Middle Cambrian era.
References
Homostelea Wikipedia(Text) CC BY-SA