Classification of Leucilla
Phylum :- Porifera (Pore bearing, cellular grade, asymmetrical or radially symmetrical)
Class :- Calcarea (Calcareous spicules present)
Order :- Heterocoel (Syconoid sponges with internal folds)
Genus :- Leucilla
Distribution
- It is a small solitary and marine sponge
Habit and Habitat
- Common in Europe. Distributed from Rhode Island to Greenland.
Characterstics of Leucilla
- Anterior apical portion is narrow.
- Posterior basal portion is broad and attached to substratum.
- Osculum is situated at the anterior extremity and is surrounded by oscular fringe of monaxon spicules.
- Canal system is of primitive leuconoid type.
- Each radial canal is subdivided into elongated flagellated chambers, grouped around a common excurrent channel.
- Skeleton is of inarticulate type.
Identification
- Since the specimen has narrow anterior end with pores, oscular fringe and all above features hence it is Leucilla.