Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is Earth's most abundant element, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula O
2. Diatomic oxygen gas currently constitutes 20.95% of the Earth's atmosphere, though this has changed considerably over long periods of time. Oxygen makes up almost half of the Earth's crust in the form of oxides.
Shaquille Rashaun O'Neal, known commonly as "Shaq", is an American former professional basketball player who is a sports analyst on the television program Inside the NBA. O'Neal is regarded as one of the greatest basketball players and centers of all time. He is a 7-foot-1-inch (2.16 m) and 325-pound (147 kg) center who played for six teams over his 19-year career in the National Basketball Association (NBA) and is a four-time NBA champion.
Cumacea is an order of small marine crustaceans of the superorder Peracarida, occasionally called hooded shrimp or comma shrimp. Their unique appearance and uniform body plan makes them easy to distinguish from other crustaceans. They live in soft-bottoms such as mud and sand, mostly in the marine environment. There are more than 1,500 species of cumaceans formally described. The species diversity of Cumacea increases with depth.
Oniscoidea is a superfamily of isopod crustaceans, which includes most of the land-living woodlice. It includes the "common woodlouse", Oniscus asellus, in the namesake family Oniscidae.
Oniscus asellus, the common woodlouse, is one of the largest and most common species of woodlouse in the British Isles and Western and Northern Europe, growing to lengths of 16 mm and widths of 6 mm.
Orenthal James Simpson, nicknamed "Juice", is an American former football running back, actor, and broadcaster who played for the Buffalo Bills and San Francisco 49ers of the National Football League. He was also tried for the murders of his former wife, Nicole Brown Simpson, and her friend Ron Goldman and acquitted of the murders in criminal court, but was later found responsible for both deaths in a civil trial.
Hylaeamys megacephalus, also known as Azara's broad-headed oryzomys or the large-headed rice rat, is a species of rodent in the genus Hylaeamys of family Cricetidae, of which it is the type species. It is found mainly in lowland tropical rainforest from its type locality in Paraguay north through central Brazil, French Guiana, Guyana, Suriname, and Venezuela onto Trinidad and Tobago. To its west and east, other closely related species of Hylaeamys are found: H. perenensis in western Amazonia, H. acritus in Bolivia, and H. laticeps and H. oniscus in the Atlantic Forest of eastern Brazil.
Ischnochiton is a genus of polyplacophoran mollusc.
A woodlouse is any crustacean belonging to the suborder Oniscidea within the order Isopoda. They get their name from often being found in old wood.
Hylaeamys oniscus, the sowbug rice rat, is a rodent species in the family Cricetidae. It was formerly placed in the genus Oryzomys as Oryzomys oniscus.
Lithobius variegatus is a species of centipede found in Europe, sometimes called the common banded centipede or banded centipede.
Hylaeamys is a genus of South American oryzomyine rodents found principally in humid forested areas east of the Andes. The species in this genus have historically been placed in Oryzomys. They are most closely related to Euryoryzomys, Transandinomys, Nephelomys, Oecomys, and Handleyomys, and most closely resemble species of the former two genera. They are distinguished from members of Euryoryzomys by all-dark or indistinct two-tone tail coloration, from members of Transandinomys by having shorter whiskers above their eyes that do not extend posteriorly behind their ears, and in both cases by differences in carotid circulation. The genus is named after hylaea, the term used by Humboldt for the lowland South American rainforests that are the main habitat of the genus.
Oniscidae is a family of woodlice, including the common woodlouse Oniscus asellus. Six genera are certainly placed in the family, with eight others included by some sources.
Morum oniscus is a species of sea snail, a marine gastropod mollusk in the family Harpidae, the harp snails.
The 10th edition of Systema Naturae is a book written by Swedish naturalist Carl Linnaeus and published in two volumes in 1758 and 1759, which marks the starting point of zoological nomenclature. In it, Linnaeus introduced binomial nomenclature for animals, something he had already done for plants in his 1753 publication of Species Plantarum.
In the 10th edition of Systema Naturae, Carl Linnaeus classified the arthropods, including insects, arachnids and crustaceans, among his class "Insecta". He described the Insecta as:
A very numerous and various class consisting of small animals, breathing through lateral spiracles, armed on all sides with a bony skin, or covered with hair; furnished with many feet, and moveable antennae, which project from the head, and are the probable instruments of sensation.
In the 10th edition of Systema Naturae, Carl Linnaeus classified the arthropods, including insects, arachnids and crustaceans, among his class "Insecta". Wingless arthropods were brought together under the name Aptera.
Ischnochiton oniscus, the dwarf chiton, is a small polyplacophoran mollusc in the family Ischnochitonidae, endemic to the coast of southern Africa.
Morum is a genus of sea snails, marine gastropod mollusks in the subfamily Moruminae of the family Harpidae.
