Choiaella

{{Short description|Extinct genus of sponges}}

{{Automatic taxobox

| fossil_range = {{fossil range|Chengjiang|Llandovery|ref=}}

| image = Choiaella radiata.JPG

| image_caption = †Choiaella radiata

| taxon = Choiaella

| authority = Rigby & Hou, 1995{{cite journal|last1=Rigby|first1=J. K.|last2=Hou|first2=X.-G.|year=1995|title=Lower Cambrian demosponges and hexactinellid sponges from Yunnan, China|journal=Journal of Paleontology|volume=69|issue=6|pages=1009–1019|doi=10.1017/S0022336000037999|jstor=1306406|bibcode=1995JPal...69.1009R |s2cid=133542014 }}

| type_species = †Choiaella radiata

| type_species_authority = Rigby & Hou, 1995

| subdivision_ranks = Species

| subdivision =

• †Choiaella radiata Rigby & Hou, 1995
• †Choiaella scotica

}}

Choiaella is an extinct genus of sea sponge ranging from the Chengjiang lagerstatten until the Lower Silurian.{{Cite journal| pages = 737–748| year = 2007| doi = 10.1016/j.geobios.2007.02.006| first1 = J.| volume = 40| title = 'Cambrian' demosponges in the Ordovician of Morocco: Insights into the early evolutionary history of sponges| journal = Geobios| last1 = Botting| issue = 6 | bibcode = 2007Geobi..40..737B}}

It is closely related to the genera Choia and Allantospongia, which the Chengjiang fauna species C. radiata coexisted sympatrically with.

The species C. scotica is known from the Caradoc-aged fine sandstone of Wallace's Cast, Southern Uplands of Scotland.

The Silurian species has not been formally named.