Hexactinellid

Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed silaceous spicules, often referred to as glass sponges. They are usually classified along with other sponges, but some researchers consider them sufficiently distinct to deserve their own phylum, Symplasma.

Hexactinellid sponges Temporal range: Cambrian - Recent
"Hexactinellae" from Ernst Haeckel's Kunstformen der Natur, 1904
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Class:	Hexactinellida Schmidt, 1870
Subclasses
Amphidiscophora Hexasterophora