Megistocrinus
Megistocrinus abnormis
Megistocrinus concavus
Megistocrinus depressus
Megistocrinus farnsworthi
Megistocrinus multidecoratus
Megistocrinus nodosus
Megistocrinus novus
Megistocrinus ontario
Megistocrinus regularis
Megistocrinus rugosus
Megistocrinus sphaeralis
Megistocrinus tuberatus