''Titusvillia'' is an extinct

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of colonial

glass sponge 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 ...

s that existed during the

carboniferous The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carbonifero ...

period around 300 million years ago. It is represented by a single species, ''Titusvillia drakei''.

Taxonomy

It is uncertain if taxa in the clade Silicarea are a separate phylum, or contained within the phylum Porifera.Invertebrate Zoology
(according to this source Silicispongea is part of

Porifera Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through th ...

however, according to the

Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ...

Silicispongea is its own phylum)

References

Hexactinellida genera Prehistoric sponge genera Carboniferous invertebrates Devonian animals of North America {{carboniferous-animal-stub