Biology:Hexactinosa

Hexactinosa; Temporal range: 456.1–Present Ma PreЄ Є O S D C P T J K Pg N
	†Cribrospongia clathrata at Teylers Museum, Haarlem
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Class:	Hexactinellida
Order:	Hexactinosa; Schrammen, 1903
Families
	Aphrocallistidae Gray, 1867; Aulocalycidae Ijima, 1927; Craticulariidae Rauff, 1893; Cribrospongiidae Roemer, 1864; Cystispongiidae Finks et al., 2004; Euretidae Zittel, 1877; Pillaraspongiidae Rigby, 1986; Staurodermatidae Zittel, 1877; Tretodictyidae Schulze, 1887;

Hexactinosa is an order of glass sponges in the subclass Hexasterophora.

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Hexactinosa Temporal range: 456.1–Present Ma PreЄ Є O S D C P T J K Pg N

†Cribrospongia clathrata at Teylers Museum, Haarlem
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Class:	Hexactinellida
Order:	Hexactinosa Schrammen, 1903^[1]
Families
Aphrocallistidae Gray, 1867 Aulocalycidae Ijima, 1927 Craticulariidae Rauff, 1893 Cribrospongiidae Roemer, 1864 Cystispongiidae Finks et al., 2004 Euretidae Zittel, 1877 Pillaraspongiidae Rigby, 1986 Staurodermatidae Zittel, 1877 Tretodictyidae Schulze, 1887