genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
glass sponge
Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed silica, siliceous spicule (sponge), spicules, often referred to as glass sponges. They are usually biological classification, classified along with other sponges i ...