Leucosolenida
Order of calcareous sponges
From Wikipedia, the free encyclopedia
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]
| Leucosolenida | |
|---|---|
| |
| Grantia compressa (Grantiidae) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Porifera |
| Class: | Calcarea |
| Subclass: | Calcaronea |
| Order: | Leucosolenida Hartman, 1958 |
| Families | |
|
See text. | |
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]
