Echinocardium capense- Echinocardium connectens
- Echinocardium cordatum
- Echinocardium depressum
- Echinocardium fenauxi
- Echinocardium flavescens
- Echinocardium kelloggi
- Echinocardium laevigaster
- Echinocardium lymani
- Echinocardium marylandiense
- Echinocardium mediterraneum
- Echinocardium mortenseni
- Echinocardium pennatifidum
- Spatangus orthonotus