After a growth interval, the polyp begins reproducing asexually by budding and, in the Scyphozoa, is called a " segmenting polyp ", or a scyphistoma.
12.
Although conventionally considered to be an order in the class Scyphozoa, recent genetic studies suggest that Stauromedusae should be elevated to a taxon equivalent of Scyphozoa and Cubozoa, and should therefore be known as the class Staurozoa.
13.
Although conventionally considered to be an order in the class Scyphozoa, recent genetic studies suggest that Stauromedusae should be elevated to a taxon equivalent of Scyphozoa and Cubozoa, and should therefore be known as the class Staurozoa.
14.
I would suggest that you do an image search in google using the key work " Scyphozoa " and see if anything turns up that looks like your creature .-- Eriastrum 19 : 29, 7 October 2007 ( UTC)
15.
There are over 200 species of Scyphozoa, about 50 species of Staurozoa, about 20 species of Cubozoa, and the Hydrozoa includes about 1000 1500 species that produce medusae ( and many more hydrozoan species that do not produce medusae ).
16.
Cnidarians are classified into four main groups : the almost wholly class in their own right rather than a sub-group of Scyphozoa, and there is debate about whether Myxozoa and Polypodiozoa are cnidarians or closer to bilaterians ( more complex animals ).
17.
Meanwhile, life cycle reversal, in which polyps are formed directly from medusae without the involvement of sexual reproduction process, was observed in both Hydrozoa ( " Turritopsis dohrnii " and " Laodicea undulata " ) and Scyphozoa ( " Aurelia " sp . 1 ).
18.
Nerve nets are found in species in the phyla Cnidaria ( e . g . scyphozoa, box jellyfish, and sea anemones ), Coelenterates diverged 570 million years ago, prior to the Cambrian explosion, and they are the first two phyla to possess nervous systems which differentiate during development and communicate by synaptic conduction.
19.
He studied water polyps of the Adriatic Sea ( " Rad JAZU ", 1898; " Glasnik Hrvatskog naravoslovnog druatva ", 1903; " Zoologischer Anzeiger ", Leipzig 1911, 1912, 1914; " Glasnik Hrvatskog prirodoslovnog druatva ", 1921 ), planktonic Coelenterata of scyphozoa and ctenophora ( " Rad JAZU ", 1913 ), and also wrote several papers on sponges in the Adriatic, discovering several new species ( " Glasnik Hrvatskog prirodoslovnog druatva ", 1921; " Zoologische Jahrb�cher ", " Abt . f�r Systematik, �kologie und Geographie der Tiere ", Jena 1923 ).
