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''Arturia alcatraziensis'' is a
species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of
calcareous sponge The calcareous sponges or calcereans are sponges that make up the class Calcarea, characterized by spicules made of calcium carbonate in the form of high-magnesium calcite or aragonite. While the spicules in most species are triradiate (with three ...
from Brazil. It is named after the Alcatrazes Islands where it was discovered.


References

alcatraziensis Sponges of Brazil Sponges described in 2007 {{calcarea-stub