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Dentiraja Australis
The Sydney skate (''Dentiraja australis'') is a species of Skate (fish), skate of the family Rajidae native to waters off the east coast of Australia. Taxonomy Scottish-Australian naturalist William John Macleay described the species as ''Raja australis'' in 1884, from specimens collected from a trawl off the south head of Botany Bay. He was excited by the find of a skate species in Sydney waters and wondered about its potential as a food item. He observed, "As an article of food, skate has never been much in favour here, in fact, except in French cafés and places of that kind." It was placed in the genus ''Dipturus'' in 2002, with other members of the then subgenus ''Dentiraja'' before the group was raised to genus level as a whole in 2016, when it gained its current binomial name ''Dentiraja australis''. As well as Sydney skate, the species is also known as common skate, Pommy skate, or simply skate. Description Generally between long, the Sydney skate can reach in length. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skate (fish)
Skates are cartilaginous fish belonging to the family Rajidae in the superorder Batoidea of rays. More than 150 species have been described, in 17 genera.LAST, P.R. & SÉRET, B. & STEHMANN, M.F.W. & WEIGMANN, S. (2016) Skates, Family Rajidae. In: Last, P.R., White, W.T., Carvalho, M.R. de, Séret, B., Stehmann, M.F.W & Naylor, G.J.P (Eds.) Rays of the World. CSIRO Publishing, Melbourne: 204–363 Softnose skates and pygmy skates were previously treated as subfamilies of Rajidae (Arhynchobatinae and Gurgesiellinae), but are now considered as distinct families. Alternatively, the name "skate" is used to refer to the entire order of Rajiformes (families Anacanthobatidae, Arhynchobatidae, Gurgesiellidae and Rajidae). Members of Rajidae are distinguished by a stiff snout and a rostrum that is not reduced. Taxonomy and systematics Evolution Skates belong to the ancient lineage of cartilaginous fishes. Fossil denticles (tooth-like scales in the skin) resembling those of today's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William John Macleay
Sir William John Macleay (13 June 1820 – 7 December 1891) was a Scottish-Australian politician, Natural history, naturalist, zoologist, and Herpetology, herpetologist. Early life Macleay was born at Wick, Highland, Wick, Caithness, Scotland, second son of Kenneth Macleay of Keiss and his wife Barbara, ''née'' Horne. Macleay was educated at the Edinburgh Academy 1834–36 and then to studied medicine at the University of Edinburgh; but when he was 18 years old his widowed mother died, and he decided to go to Australia with his cousin, William Sharp MacLeay. They arrived at Sydney in March 1839 on HMS Royal George (1827), HMS ''Royal George''. William Macleay took up land at first near Goulburn, New South Wales, Goulburn, and afterwards on the Murrumbidgee River. He is noted as the last of the naturalists in a family active in this field; his uncle was Alexander Macleay, Colonial Secretary of New South Wales from 1826 to 1836, and a member and fellow of societies concerned wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botany Bay
Botany Bay (Dharawal: ''Kamay''), an open oceanic embayment, is located in Sydney, New South Wales, Australia, south of the Sydney central business district. Its source is the confluence of the Georges River at Taren Point and the Cooks River at Kyeemagh, which flows to the east before meeting its mouth at the Tasman Sea, midpoint between the suburbs of La Perouse and Kurnell. The northern headland of the entrance to the bay from the Tasman Sea is Cape Banks and, on the southern side, the outer headland is Cape Solander and the inner headland is Sutherland Point. The total catchment area of the bay is approximately . Despite its relative shallowness, the bay now serves as greater metropolitan Sydney's main cargo seaport, located at Port Botany, with facilities managed by Sydney Ports Corporation. Two runways of Sydney Airport extend into the bay, as do some port facilities. Botany Bay National Park is located on the northern and southern headlands of the bay. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dipturus
''Dipturus'' is a large genus of skates native to the Pacific, Atlantic, and Indian Oceans. They were formerly included in ''Raja''. Some species initially moved to ''Dipturus'' were later placed in ''Dentiraja'', ''Spiniraja'', and '' Zearaja''. Species Currently, 40 recognized species are placed in this genus: * '' Dipturus acrobelus'' Last, W. T. White & Pogonoski, 2008 (deepwater skate) * '' Dipturus amphispinus'' Last & Alava, 2013 (Ridgeback skate)Last, P.R. & Alava, M. (2013)''Dipturus amphispinus'' sp. nov., a new longsnout skate (Rajoidei: Rajidae) from the Philippines.Pp. 214-227 in: de Carvalho, M.R., Ebert, D.A., Ho, H.-C. & White, W.T. (eds.) : Systematics and biodiversity of sharks, rays, and chimaeras (Chondrichthyes) of Taiwan. ''Zootaxa, 3752 (1): 1–386.'' * '' Dipturus apricus'' Last, W. T. White & Pogonoski, 2008 (pale tropical skate) * '' Dipturus batis'' (Linnaeus, 1758) (common skate or blue skate) * '' Dipturus bullisi'' ( Bigelow & Schroeder, 1962) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dentiraja
''Dentiraja'' is a genus of skates native to the oceans around Australia. Members of this genus usually grow up to a maximum of 35 – 70 cm, with the longest being Heald's skate ('' Dentiraja healdi''), with a maximum length of about 72 cm. Species There are currently 9 recognized species in this genus: * '' Dentiraja australis'', (Macleay, 1884) (Sydney skate) * '' Dentiraja cerva'' (Whitley, 1939) (white-spotted skate) * ''Dentiraja confusa'' (Last, 2008) (Australian longnose skate) * '' Dentiraja endeavouri'' (Last, 2008) (Endeavour skate) * '' Dentiraja falloarga'' (Last, 2008) (false argus skate) * '' Dentiraja flindersi'' Last & Gledhill, 2008 (pygmy thornback skate) * '' Dentiraja healdi'' (Last A last is a mechanical form shaped like a human foot. It is used by shoemakers and cordwainers in the manufacture and repair of shoes. Lasts typically come in pairs and have been made from various materials, including hardwoods, cast iron, an ..., W. T. White & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rajiformes
Rajiformes is one of the four orders in the superorder Batoidea, flattened cartilaginous fishes related to sharks. Rajiforms are distinguished by the presence of greatly enlarged pectoral fins, which reach as far forward as the sides of the head, with a generally flattened body. The undulatory pectoral fin motion diagnostic to this taxon is known as rajiform locomotion. The eyes and spiracles are located on the upper surface of the head and the gill slits are on the underside of the body. Most species give birth to live young, although some lay eggs enclosed in a horny capsule ("mermaid's purse"). Characteristics Rajoids typically have a dorsoventrally flattened body. The snout is slender and pointed and the wide mouth, often covered with a fleshy nasal flap, is on the underside of the head. The eyes and well-developed spiracles are located on the top of the head. In most species, the spiracles are large and are the main means of drawing water in for respiration. There is no n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Fish Of Southern Australia
Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (other) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * Marines, a naval-based infantry force ** United States Marine Corps ** Royal Marines of the UK ** Brazilian Marine Corps ** Spanish Marine Infantry ** Fusiliers marins (France) ** Indonesian Marine Corps ** Republic of China Marine Corps ** Republic of Korea Marine Corps ** Royal Thai Marine Corps *"Marine" also means "navy" in several languages: ** Austro-Hungarian Navy () ** Belgian Navy (, , ) ** Royal Canadian Navy () *** Provincial Marine (1796–1910), a predecessor to the Royal Canadian Navy ** Navy of the Democratic Republic of the Congo () ** Royal Danish Navy () ** Finnish Navy (, ) ** French Navy () ** Gabonese Navy () ** German Navy () ** Royal Moroccan Navy () ** Royal Netherlands Navy () ** Swedish Navy () Places * Marine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1844
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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