The following points highlight the ten representative types of Echinodermata. The types are: 1. Antedon 2. Holothuria 3. Cucumaria 4. Thyone 5. Echinus 6. Echinarachinus 7. Echinocardium 8. Astropecten 9. Pentaceros 10. Ophiothrix. Echinodermata: Type # 1. Antedon: Antedon (Fig. 86.1) is commonly known as feather star. Body consists of a central disc or calyx […]