Astrocyathus Ludwig, 1866 † (original description)
Astrocyathus ceratites (Goldfuss, 1826) † (new combination reference)
Astrocyathus dilitatus Ludwig, 1866 † (original description)
Astrocyathus geinitzi Ludwig, 1866 (original description)
Astrocyathus helmerseni Ludwig, 1866 † (original description)
Astrocyathus inditus Ludwig, 1866 † (original description)
Astrocyathus lineatus (Quenstedt, 1852) † accepted as Cyathophyllum lineatum Quenstedt, 1852 † (new combination reference)
Astrocyathus nutricius Ludwig, 1866 † (original description)
Astrocyathus prolixus Ludwig, 1866 † (original description)
Astrocyathus vesiculosus (Goldfuss, 1826) † (new combination reference)
Turbinolia echinata Hisinger, 1831 † accepted as Ptycholopas echinata (Hisinger, 1831) † (basis of record)

 Homonymy

 for Astrocyathus Haeckel, 1904

Junior homonym of Astrocyathus Ludwig, 1866 [details]

 Taxonomic remark

 for Liochartocyathus Ludwig, 1866 †

The type is a sponge of the genus Chaetetes Fischer, 1830 [details]