Clathrinida
Encyclopedia
Clathrinida is an order
of Calcinea
. Members of this order have calcareous skeletons, and are strictly marine. These sponges have an asconoid
structure and lack a true dermal membrane or cortex
. The spongocoel
is lined with choanocytes.
Order (biology)
In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...
of Calcinea
Calcinea
Calcinea is a subclass of the calcareous sponges....
. Members of this order have calcareous skeletons, and are strictly marine. These sponges have an asconoid
Asconoid
Asconoid is one of three possible body plans for sponges, which form the phylum Porifera in kingdom Animalia and subkingdom Parazoa which means that they do not have a definite body shape. The asconoid body plan is characterized by a stalk-like spongocoel surrounded by a single layer of choanocytes...
structure and lack a true dermal membrane or cortex
Cortex (anatomy)
In anatomy and zoology the cortex is the outermost layer of an organ. Organs with well-defined cortical layers include kidneys, adrenal glands, ovaries, the thymus, and portions of the brain, including the cerebral cortex, the most well-known of all cortices.The cerebellar cortex is the thin gray...
. The spongocoel
Spongocoel
A spongocoel is the large, central cavity of sponges. Water enters the spongocoel through hundreds of tiny pores and exits through the larger opening . Depending on the body plan of the sponge , the spongocoel could be a simple interior space of the sponge or a complexly branched inner structure...
is lined with choanocytes.