Dentist specialties are recognized in those areas where advanced knowledge and skills are essential to maintain or restore oral health. The list of recognized dental specialties differs from country to country.
In contrast, radially symmetrical animals like jellyfish have a topside and a downside, but no identifiable front or back. The bilateria are a major group of animals, including the majority of phyla but not sponges, cnidarians, placozoans and ctenophores. For the most part, bilateral embryos are triploblastic, having three germ layers: endoderm, mesoderm, and ectoderm.
Snakes have a radial symmetry, meaning that they are symmetrical when a piece of them is cut. Some of the other animals that have a radial symmetry include starfish and even certain flowers.Jellyfish are also prime examples of organisms with a radial symmetry.These animals are symmetrical from an axis that is located in the center, though this is not always the case.nimals like reptiles and sea creatures are not the only organisms that can have a radial symmetry though; even some viruses have been proven to have a radial symmetry, with coats that are comprised of small protein molecules.