| Plesiodiadema horridum (Agassiz, 1898) | 
| No Picture Available | 
| Family: | Aspidodiadematidae () | |||
| Max. size: | ||||
| Environment: | benthic; marine; depth range 1625 - 3241 m | |||
| Distribution: | Eastern Pacific: Costa Rica and Galapagos. | |||
| Diagnosis: | ||||
| Biology: | This is an epibenthic species found at depths of 1625 to 3241 m (Ref. 83942). | |||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. 123251) | |||
| Threat to humans: | harmless | |||
| Country info: |  | |||