Racekiela ryderi
Encyclopedia
Racekiela ryderi is a species
of freshwater demosponge
in the family
Spongillidae
. It was first described by Edward Potts in 1882.
A freshwater sponge collected on Sable Island
in 1899 by John Macoun
, a biologist with the Geological Survey of Canada, and given the name Heteromeyenia macouni by A.H. Mackay in 1900, is now considered to be Racekiela ryderi.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of freshwater demosponge
Demosponge
The Demospongiae are the largest class in the phylum Porifera. Their "skeletons" are made of spicules consisting of fibers of the protein spongin, the mineral silica, or both. Where spicules of silica are present, they have a different shape from those in the otherwise similar glass sponges...
in the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
Spongillidae
Spongillidae
The Spongillidae are a family of sponges that live in fresh water lakes. There are 23 genera....
. It was first described by Edward Potts in 1882.
A freshwater sponge collected on Sable Island
Sable Island
Sable Island is a small Canadian island situated 300 km southeast of mainland Nova Scotia in the Atlantic Ocean. The island is a year-round home to approximately five people...
in 1899 by John Macoun
John Macoun
John Macoun was an Irish-born Canadian naturalist.- Early life :Macoun was born in Magheralin, County Down, Ireland in 1831, the third child of James Macoun and Anne Jane Nevin. In 1850 the worsening economic situation in Ireland led his family to emigrate to Canada, where he settled in Seymour...
, a biologist with the Geological Survey of Canada, and given the name Heteromeyenia macouni by A.H. Mackay in 1900, is now considered to be Racekiela ryderi.