|
Aptychotrema
''Aptychotrema'' is a genus of guitarfish which belongs to the family Trygonorrhinidae. They were formerly classified in the family Rhinobatidae. They are found off the coast of Australia. Species There are three living species, and one extinct species only known from fossil remains of Cenomanian age.Bernárdez, E. (2002). Los dientes de seláceos del Cretácico de la depresión central asturiana. Univ. d'Oviedo: 1–476. * †'' Aptychotrema massoniae'' Bernardez, 2002 * '' Aptychotrema rostrata'' Shaw, 1794 (Eastern shovelnose ray or Short-snouted shovelnose ray) - synonym: ''Aptychotrema bougainvillii'' J. P. Müller & Henle, 841 * '' Aptychotrema timorensis'' 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 come in many styles and sizes, depending on the exact job they are designed for. Common variations ..., 2004 (Spotted shovelnose ray) * '' Aptychotrema vincentian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Shovelnose Ray
The eastern shovelnose ray (''Aptychotrema rostrata'') is a species of guitarfish in the family Rhinobatidae of order Rhinopristiformes. The species is endemic to the east coast of Australia and inhabits subtropical and temperate waters from southern Queensland to southern New South Wales. The eastern shovelnose ray is a small to medium size guitarfish reaching total lengths of . Recent studies suggest the species may have trichromatic colour vision due to the discovery of three spectrally distinct cone visual pigments in the retinae. The eastern shovelnose ray expresses a difference in tooth and jaw structure according to sex, with males developing a more pronounced lower jaw, longer and sharper teeth, and greater jaw strength to enable males to grip a female's fin during mating. The diet of the eastern shovelnose ray consists predominantly of fish, molluscs and benthic invertebrates. Shovelnose rays are suction-crushing feeders and their teeth structure and shape enables them t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aptychotrema Timorensis
''Aptychotrema'' is a genus of guitarfish which belongs to the family Trygonorrhinidae. They were formerly classified in the family Rhinobatidae. They are found off the coast of Australia. Species There are three living species, and one extinct species only known from fossil remains of Cenomanian age.Bernárdez, E. (2002). Los dientes de seláceos del Cretácico de la depresión central asturiana. Univ. d'Oviedo: 1–476. * †'' Aptychotrema massoniae'' Bernardez, 2002 * '' Aptychotrema rostrata'' Shaw, 1794 (Eastern shovelnose ray or Short-snouted shovelnose ray) - synonym: ''Aptychotrema bougainvillii'' J. P. Müller & Henle, 841 * '' Aptychotrema timorensis'' 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 come in many styles and sizes, depending on the exact job they are designed for. Common variations ..., 2004 (Spotted shovelnose ray) * '' Aptychotrema vincentian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guitarfish
The guitarfish, also referred to as shovelnose rays, are a family, Rhinobatidae, of rays. The guitarfish are known for an elongated body with a flattened head and trunk and small, ray-like wings. The combined range of the various species is tropical, subtropical, and warm temperate waters worldwide. Names In Australia and New Zealand, guitarfish are commonly referred to as shovelnose rays or shovelnose sharks. Description Guitarfish have a body form intermediate between those of sharks and rays. The tail has a typical shark-like form, but in many species, the head has a triangular, or guitar-like shape, rather than the disc-shape formed by fusion with the pectoral fins found in other rays. Reproduction Guitarfish can be ovoviviparous; the embryo matures inside an egg within the mother until it is ready to hatch. This is typical of rays. Habitat Guitarfish are bottom feeders that bury themselves in mud or sand and eat worms, crabs, and clams. Some can tolerate salt, fresh, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aptychotrema Vincentiana
The southern shovelnose ray, western shovelnose ray, or yellow shovelnose ray (''Aptychotrema vincentiana'') is a species of fish in the Rhinobatidae family. It is endemic to southern Australia. Its natural habitat In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ...s are open seas and shallow seas. References southern shovelnose ray Fauna of South Australia southern shovelnose ray Taxonomy articles created by Polbot {{Rajiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trygonorrhinidae
Trygonorrhinidae, the banjo rays, is a family of rays, comprising eight species in three genera. They were formerly classified in the family Rhinobatidae. Taxonomy * '' Aptychotrema'' Norman, 1926 ** '' Aptychotrema rostrata'' Shaw, 1794 (Eastern shovelnose ray) ** '' Aptychotrema timorensis'' 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 come in many styles and sizes, depending on the exact job they are designed for. Common variations ..., 2004 (Spotted shovelnose ray) ** '' Aptychotrema vincentiana'' Haacke, 1885 (Western shovelnose ray) * '' Trygonorrhina'' J. P. Müller & Henle, 1838 ** '' Trygonorrhina dumerilii'' ( Castelnau, 1873) (Southern fiddler ray) ** '' Trygonorrhina fasciata'' J. P. Müller & Henle, 1841 (Eastern fiddler ray) * '' Zapteryx'' D. S. Jordan & C. H. Gilbert, 1880 ** '' Zapteryx brevirostris'' J. P. Müller & Henle, 1841 (Shortnose guitar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aptychotrema Massoniae
''Aptychotrema massoniae'' is an extinct species of guitarfish, belonging to the family Rhinobatidae. Its only known fossil remains belong to the of Cenomanian The Cenomanian is, in the International Commission on Stratigraphy's (ICS) geological timescale, the oldest or earliest age (geology), age of the Late Cretaceous epoch (geology), Epoch or the lowest stage (stratigraphy), stage of the Upper Cretace ... age.Bernárdez, E. (2002). Los dientes de seláceos del Cretácico de la depresión central asturiana. Univ. d'Oviedo: 1–476. References massoniae Fish described in 2002 Cenomanian species Late Cretaceous cartilaginous fish {{paleo-batoid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Though the fossil record is incomplete, numerous studies have demonstrated that there is enough information available to give a good understanding of the pattern of diversification of life on Earth. In addition, the record can predict and fill gaps such as the discovery of '' Tiktaalik'' in the arctic of Canada. Paleontology includes the study of fossils: their age, method of formation, and evolutionary significance. Specimens are sometimes considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years to 4.1 billion years old. Early edition, published online before prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cenomanian
The Cenomanian is, in the International Commission on Stratigraphy's (ICS) geological timescale, the oldest or earliest age (geology), age of the Late Cretaceous epoch (geology), Epoch or the lowest stage (stratigraphy), stage of the Upper Cretaceous series (stratigraphy), Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the stratigraphic column deposited during the corresponding age. Both age and stage bear the same name. As a unit of geologic time measure, the Cenomanian Age spans the time between 100.5 and 93.9 million years ago (Mya). In the geologic timescale, it is preceded by the Albian and is followed by the Turonian. The Upper Cenomanian starts around at 95 Mya. The Cenomanian is coeval with the Woodbinian of the regional timescale of the Gulf of Mexico and the early part of the Eaglefordian of the regional timescale of the East Coast of the United States. At the end of the Cenomanian, an anoxic event took place, called the Cenomani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Roxborough Norman
John Roxborough Norman (1898, Wandsworth, London – 26 May 1944, Berkhamsted, Hertfordshire) was an English ichthyologist. He started as a clerk in a bank. His lifetime affliction with rheumatic fever began during his military service during the First World War. He entered the British Museum in 1921 where he worked for Charles Tate Regan (1878–1943). From 1939 to 1944, he was in charge of the Natural History Museum at Tring as the Curator of Zoology. Norman was the author of, among others, ''A History of Fishes'' (1931) and ''A Draft Synopsis of the Orders, Families and Genera of Recent Fishes'' (1957). He was considered closer to Albert Günther (1830–1914) than to Regan. Taxon described by him *See :Taxa named by John Roxborough Norman Taxon named in his honor *The fish ''Acnodon normani'' William Alonzo Gosline III, Gosline, 1951 *The fish ''Physiculus normani'' Rainer Brüss, Brüss, 1986 *The fish ''Poropanchax normani'' (Ernst Ahl, Ahl, 1928) *The mote sculpin ''Norm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Shaw (biologist)
George Kearsley Shaw (10 December 1751 – 22 July 1813) was an English botanist and zoologist. Life Shaw was born at Bierton, Buckinghamshire, and was educated at Magdalen Hall, Oxford, receiving his M.A. in 1772. He took up the profession of medical practitioner. In 1786, he became the assistant lecturer in botany at the University of Oxford. He became a fellow of the Royal Society in 1789. In 1791, Shaw became assistant keeper of the natural history department at the British Museum, succeeding Edward Whitaker Gray as keeper in 1806. He found that most of the items donated to the museum by Hans Sloane were in very bad condition. Medical and anatomical material was sent to the museum at the Royal College of Surgeons of England, Royal College of Surgeons, but many of the stuffed animals and birds had deteriorated and had to be burnt. He was succeeded after his death by his assistant Charles Konig. Shaw's library of natural history books and some of his specimens and equipment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
