Clathrina Cribrata
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''Clathrina cribrata'' is a
species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of
calcareous sponge The calcareous sponges of class Calcarea are members of the animal phylum Porifera, the cellular sponges. They are characterized by spicules made of calcium carbonate in the form of calcite or aragonite. While the spicules in most species hav ...
in the
family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Clathrinidae Clathrinidae is a family of calcareous sponges in the order Clathrinida. It contains the following genera: ''Arturia'' '' Borojevia'' '' Brattegardia'' ''Clathrina'' ''Ernstia ''Ernstia'' is a genus of calcareous sponges in the family Clathr ...
. The
holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several ...
was collected from
Kristiansund Kristiansund (, ; historically spelled Christianssund and earlier named Fosna) is a municipality on the western coast of Norway in the Nordmøre district of Møre og Romsdal county. The administrative center of the municipality is the town of ...
, Norway.


Description

''Clathrina cribrata'' is a massive species with its body formed from a network of large, irregular tubes. Some of these extend above the main body of the sponge as blind tubes and others are open-ended, serving as osculi. This sponge contains only one type of calcareous spicule. These are three-rayed spicules, known as triactines, and are distributed throughout the tissues in an unorganized way.


References

Clathrina Animals described in 2001 Fauna of Norway {{calcarea-stub