| Genus and Selected Species | Image |
|---|---|
| Asteronyx loveni | |
| Astrodia tenuispina | |
| Astronebris tatafilius | |
| Ophioschiza monacantha | |
| Genus and Selected Species | Image |
|---|---|
| Asteromorpha steenstrupi |  |
| Asteroschema clavigera |  |
| Asterostegus sabineae |  |
| Astrobrachion constrictum |  |
| Astroceras aurantiacum |  |
| Astrocharis monospinosa |  |
| Euryale aspera |  |
| Ophiocreas oedipus |  |
| Squamophis lifouensis |  |
| Sthenocephalus indicus |  |
| Trichaster flagellifer |  |
| Genus and Selected Species | Image |
|---|---|
| Asteroporpa annulata |  |
| Astracme mucronata |  |
| Astroboa ernae |  |
| Astrocaneum spinosum |  |
| Astrochalcis ludwigi |  |
| Astrochele lymani |  |
| Astrochlamys bruneus |  |
| Astrocladus euryale |  |
| Astroclon propugnatoris |  |
| Astrocnida sidis |  |
| Astrocrius murrayi |  |
| Astrocyclus caecilia |  |
| Astrodendrum elingamata |  |
| Astrodictyum panamense |  |
| Astroglymma sculpta |  |
| Astrogomphus rudis | |
| Astrogordius cacaoticus | |
| Astrohamma tuberculatum |  |
| Astroniwa nukurangi | |
| Astrophyton muricatum |  |
| Astroplegma expansum | |
| Astrosierra amblyconus |  |
| Astrospartus meditereeraneus |  |
| Astrothamnus echinaceus |  |
| Astrothorax waitei |  |
| Astrothrombus rugosus |  |
| Astrotoma agassizii |  |
| Astrozona munita | |
| Conocladus australis |  |
| Gorgonocephalus eucnemis |  |
| Ophiozeta turgida | |
| Schizostella bifurcata |  |