| Jenkina | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Porifera |
| Class: | Calcarea |
| Order: | Leucosolenida |
| Family: | Jenkinidae |
| Genus: | Jenkina Brøndsted, 1931 |
Jenkina is a genus of sponges belonging to the family Jenkinidae. [1]
The species of this genus are found in Antarctica. [1]
Species: [1]
The Gauss expedition of 1901–1903 was the first German expedition to Antarctica. It was led by geologist Erich von Drygalski in the ship Gauss, named after the mathematician and physicist Carl Friedrich Gauss.
Dendyidae is a family of calcareous sponges, which contains thirteen species in two genera.
Leucosolenia is a genus of calcareous sponges belonging to the family Leucosoleniidae. Species of this genus usually appear as groups of curved vases, up to 2 cm long, each ending in an osculum. The overall shape is sometimes likened to a tiny bunch of bananas. They are most often observed in tide pools, clustered around the base of seaweeds or on rocks, and occur in a variety of colours, usually rather pale. Its canal system is of asconoid type. The colony consists of few simple vase-like, cylindrical individuals each terminating in an osculum and united at their bases by irregular horizontal tubes. Leucosolenia reproduces both asexually and sexually. asexual reproduction by budding and sexual reproduction takes place by formation of gametes, i.e., ova and sperms. Lecosolenia is hermaphrodite, because both the gametes are formed in the body of same individual.
Grantia is a genus of calcareous sponges belonging to the family Grantiidae. Species of the genus Grantia contain spicules and spongin fibers.
Halichondria is a genus of sea sponges belonging to the family Halichondriidae. These are massive, amorphous sponges with clearly separated inner and outer skeletons consisting of bundles of spicules arranged in a seemingly random pattern.
Axinella is a genus of sponges in the family Axinellidae first described in 1862 by Eduard Oscar Schmidt. Species of Axinella occur in the Indian and Pacific Oceans. Most of these sponges are smaller than 20 cm, and have a yellow or orange colour.
Hymeniacidon is a genus of sea sponges in the class Demospongiae. Some members of the genus are known to be mobile, achieving speeds of between 1 and 4 mm per day.
Leucandra is a genus of calcareous sponge belonging to the family Grantiidae. Its earliest known fossils are from the Jurassic.
Suberites is a genus of sea sponges in the family Suberitidae. Sponges, known scientifically as Porifera, are the oldest metazoans and are used to elucidate the basics of multicellular evolution. These living fossils are ideal for studying the principal features of metazoans, such as extracellular matrix interactions, signal-receptor systems, nervous or sensory systems, and primitive immune systems. Thus, sponges are useful tools with which to study early animal evolution. They appeared approximately 580 million years ago.
Aaptos is a genus of sea sponges in the family Suberitidae.
Guancha apicalis was thought to be a species of calcareous sponge in the genus Guancha from Antarctica. It actually never existed.
Stylissa is a genus of sponges in the family Scopalinidae.
Gelliodes is a genus of sponges in the family Niphatidae.
Crella is a genus of marine demosponges in the family Crellidae.
Clathria (Clathria) is a subgenus of demosponge in the family Microcionidae.
Amphilectus is a genus of demosponges, comprising around 20 species found in oceans around the world.
Soleneiscus is a genus of calcareous sponges in the family Dendyidae.
Soleneiscus hispidus is a species of calcareous sponge in the family Dendyidae.
Holger Valdemar Brøndsted was a Danish zoologist, teacher and writer.
Leucettusa is a genus of sponges belonging to the family Leucaltidae.