Choiaella

Choiaella is an extinct genus of sea sponge ranging from the Chengjiang lagerstatten until the Lower Silurian.[1]

Choiaella Temporal range: Chengjiang–Llandovery[1] PreꞒ Ꞓ O S D C P T J K Pg N
†Choiaella radiata
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Class:	Demospongiae
Order:	†Protomonaxonida
Family:	†Choiidae
Genus:	†Choiaella Rigby & Hou, 1995[2]
Type species
†Choiaella radiata Rigby & Hou, 1995
Species
†Choiaella radiata Rigby & Hou, 1995 †Choiaella scotica

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.[1]

The Silurian species has not been formally named.[1]

References

1. Botting, J. (2007). "'Cambrian' demosponges in the Ordovician of Morocco: Insights into the early evolutionary history of sponges". Geobios. 40 (6): 737–748. doi:10.1016/j.geobios.2007.02.006.
2. Rigby, J. K.; Hou, X.-G. (1995). "Lower Cambrian demosponges and hexactinellid sponges from Yunnan, China". Journal of Paleontology. 69 (6): 1009–1019. doi:10.1017/S0022336000037999. JSTOR 1306406.