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Leucosolenida
	Grantia compressa (Grantiidae)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Porifera
Class:	Calcarea
Subclass:	Calcaronea
Order:	Leucosolenida; Hartman, 1958
Families
	See text.

Leucosolenida is an order of sponges in the class Calcarea and the subclass Calcaronea.^[1] Species in Leucosolenida are calcareous, with a skeleton composed exclusively of free spicules without calcified non-spicular reinforcements.^[2]^[3]

According to Systema Porifera (2002), Lucosolenida contains 9 families, ranging from fully asconoid forms (Leucosoleniidae) to fully leuconoid forms. These body plans are on a continuum based on an increasingly complex skeletal system and compartmentalized choanocytes.^[3] A few sources (such as the Treatise on Invertebrate Paleontology, 2004) place non-asconoid families into a separate order, Sycettida.^[4] Leucosolenids have a poor fossil record, with only a few ambiguous grantiid fossils reported from the Jurassic and Carboniferous.^[4]

Families

Achramorphidae Borojevic et al., 2002 (formerly known as Staurorrhaphidae)^[2]
Amphoriscidae Dendy, 1892
Grantiidae Dendy, 1892
Heteropiidae Dendy, 1892
Jenkinidae Borojevic et al., 2000
Lelapiidae? Dendy & Row, 1913
Leucosoleniidae Minchin, 1900
Sycanthidae Lendenfeld, 1891
Sycettidae Dendy, 1892 (sometimes known as Syconidae)^[1]

References

^ ^a ^b "WoRMS - World Register of Marine Species - Leucosolenida". www.marinespecies.org. Retrieved 2019-03-17.
^ ^a ^b Borojevic, Radovan; Boury-Esnault, Nicole; Vacelet, Jean (2000). "A revision of the supraspecific classification of the subclass Calcaronea (Porifera, class Calcarea)" (PDF). Zoosystematica. 22 (2): 203–263.
^ ^a ^b Borojevic, Radovan; Boury-Esnault, Nicole; Manuel, Michaël; Vacelet, Jean (2002), Hooper, John N. A.; Van Soest, Rob W. M.; Willenz, Philippe (eds.), "Order Leucosolenida Hartman, 1958", Systema Porifera: A Guide to the Classification of Sponges, Boston, MA: Springer US, pp. 1157–1184, doi:10.1007/978-1-4615-0747-5_120, ISBN 978-1-4615-0747-5, retrieved 2023-04-28
^ ^a ^b Treatise on Invertebrate Paleontology Part E, Revised. Porifera, Volume 3: Classes Demospongea, Hexactinellida, Heteractinida & Calcarea, xxxi + 872 p., 506 fig., 1 table, 2004, available here. ISBN 0-8137-3131-3.