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The Scyphozoa are an exclusively marine class of the phylum Cnidaria, [2] referred to as the true jellyfish (or "true jellies"). The class name Scyphozoa comes from the Greek word skyphos (σκύφος), denoting a kind of drinking cup and alluding to the cup shape of the organism. [3] Scyphozoans have existed from the earliest Cambrian to the ...
Protein and medusae analysis from Michael N. Dawson of the University of New South Wales confirm that Cyanea annaskala is a valid species, morphologically distinct based on differences in bell mass, number of nematocyst clusters, pits in coronal muscle folds, and other morphological characteristics. Some of the other morphological ...
Scyphozoa is the group commonly known as "true jellyfish" and occur in tropical, temperate and polar seas worldwide. Scyphozoans generally have planula larvae that develop into sessile polyps. These reproduce asexually, producing similar polyps by budding, and then either transform into medusae, or repeatedly bud medusae from their upper ...
Helmet jellyfish feeding on an armhook squid underwater. Helmet jellyfish reach a body size of up to 30 cm (12 in). The average wet weight of the jellyfish is 540 grams. [2] Overall, helmet jellyfish have a uniform size. [3] They consist 90% of water, the rest being tissue and gelatinous mass, which give the animals their form.
In the class Scyphozoa, the medusa stage is dominant, and the polyp stage may or may not be present, depending on the family. In those scyphozoans that have the larval planula metamorphose into a polyp, the polyp, also called a " scyphistoma ," grows until it develops a stack of plate-like medusae that pinch off and swim away in a process known ...
Onymacris unguicularis beetle with landmarks for morphometric analysis. In landmark-based geometric morphometrics, the spatial information missing from traditional morphometrics is contained in the data, because the data are coordinates of landmarks: discrete anatomical loci that are arguably homologous in all individuals in the analysis (i.e. they can be regarded as the "same" point in each ...
Equine conformation evaluates a horse's bone structure, musculature, and its body proportions in relation to each other. Undesirable conformation can limit the ability to perform a specific task. Undesirable conformation can limit the ability to perform a specific task.
Pages in category "Scyphozoa" The following 16 pages are in this category, out of 16 total. This list may not reflect recent changes. ...