Hexactinellid
Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed siliceous spicules, often referred to as glass sponges. They are usually classified along with other sponges in the phylum Porifera, but some researchers consider them sufficiently distinct to deserve their own phylum, Symplasma. Some experts believe glass sponges are the longest-lived animals on earth; these scientists tentatively estimate a maximum age of up to 15,000 years.
Q18960
sponge
Concept
Q7881
skeleton
Concept
Q116269
siliceous
Concept
Q17149497
spicule
Concept
Q8269924
classified
Concept
Q38348
phylum
Concept
Q18960
Porifera
Concept
Q263211
Hexactinellid
Concept
parent taxon
parent taxon
found in taxon
taxon rank