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Dapedium
''Dapedium'' (from el, δαπέδων , 'pavement') is an extinct genus of primitive neopterygian ray-finned fish. The first-described finding was an example of ''D. politum'', found in the Lower Lias of Lyme Regis, on the Jurassic Coast of England (Leach 1822). ''Dapedium'' lived in the late Triassic and Jurassic periods. Appearance The various species of ''Dapedium'' ranged from long, and all had an oval to near-circular body. The skin was covered with thick, rhomboid, ganoid (enamel-like) scales. The smallest species so far found is ''D. noricum''. The skull was armoured with bony dermal plates, which were especially plentiful in the orbital region. These bones bore irregular tubercles. The small pectoral and pelvic fins, along with the extended dorsal and anal fins formed a functional unit with the tail. The tail was short and stout, providing the power for a sudden change in direction while the fish was swimming. The upper jaw of ''Dapedium'' was moveable and coul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dapedium Politum
''Dapedium'' (from el, δαπέδων , 'pavement') is an extinct genus of primitive neopterygian ray-finned fish. The first-described finding was an example of ''D. politum'', found in the Lower Lias of Lyme Regis, on the Jurassic Coast of England (Leach 1822). ''Dapedium'' lived in the late Triassic and Jurassic periods. Appearance The various species of ''Dapedium'' ranged from long, and all had an oval to near-circular body. The skin was covered with thick, rhomboid, ganoid (enamel-like) scales. The smallest species so far found is ''D. noricum''. The skull was armoured with bony dermal plates, which were especially plentiful in the orbital region. These bones bore irregular tubercles. The small pectoral and pelvic fins, along with the extended dorsal and anal fins formed a functional unit with the tail. The tail was short and stout, providing the power for a sudden change in direction while the fish was swimming. The upper jaw of ''Dapedium'' was moveable and coul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dapediidae
Dapediidae is an extinct family of neopterygian ray-finned fish that lived during from the Late Triassic to Late Jurassic (Norian to Tithonian). It is the only family of the order Dapediiformes. Its members were historically placed within the ginglymodian family Semionotidae, but were moved to their own family in 1966. Description Dapediids had deep, laterally flattened circular bodies covered in thick ganoid scales, which gave them a resemblance to the pycnodontiforms, a group they may or may not be related to. Their teeth were adapted towards a durophagous diet; some dapediids fed on hard-shelled invertebrates, while at least one genus ('' Hemicalypterus'') may have been herbivorous. Classification Dapediids are usually considered to be either basal ginglymodians or stem group representatives of the wider clade Holostei, but some studies have found them to be early-diverging stem-teleost Teleostei (; Greek ''teleios'' "complete" + ''osteon'' "bone"), members of which a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyme Regis
Lyme Regis is a town in west Dorset, England, west of Dorchester and east of Exeter. Sometimes dubbed the "Pearl of Dorset", it lies by the English Channel at the Dorset–Devon border. It has noted fossils in cliffs and beaches on the Heritage or Jurassic Coast, a World Heritage Site. The harbour wall, known as The Cobb, appears in Jane Austen's novel ''Persuasion'', the John Fowles novel ''The French Lieutenant's Woman'' and the 1981 film of that name, partly shot in the town. A former mayor and MP was Admiral Sir George Somers, who founded the English colonial settlement of Somers Isles, now Bermuda, where Lyme Regis is twinned with St George's. In July 2015, Lyme Regis joined Jamestown, Virginia in a Historic Atlantic Triangle with St George's. The 2011 Census gave the urban area a population of 4,712, estimated at 4,805 in 2019. History In Saxon times, the abbots of Sherborne Abbey had salt-boiling rights on land adjacent to the River Lym, and the abbey once owned par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triassic Bony Fish
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of archosaurs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Ray-finned Fish Genera
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Wikipedia
The German Wikipedia (german: Deutschsprachige Wikipedia) is the German-language edition of Wikipedia, a free and publicly editable online encyclopedia. Founded on March 16, 2001, it is the second-oldest Wikipedia (after the English Wikipedia), and with articles, at present () the -largest edition of Wikipedia by number of articles, behind English Wikipedia and the mostly bot-generated Cebuano Wikipedia.] Alternative language Wikipedias, 16 March 2001List of Wikipedias/Table meta.wikimedia.org, Statistics It has the second-largest number of edits behind the English Wikipedia and over 260,000 disambiguation pages. On November 7, 2011, it became the second edition of Wikipedia, after the English edition, to exceed 100 million page edits. The German Wikipedia is criticized because of several ongoing p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Durophagy
Durophagy is the eating behavior of animals that consume hard-shelled or exoskeleton bearing organisms, such as corals, shelled mollusks, or crabs. It is mostly used to describe fish, but is also used when describing reptiles, including fossil turtles, placodonts and invertebrates, as well as "bone-crushing" mammalian carnivores such as hyenas. Durophagy requires special adaptions, such as blunt, strong teeth and a heavy jaw. Bite force is necessary to overcome the physical constraints of consuming more durable prey and gain a competitive advantage over other organisms by gaining access to more diverse or exclusive food resources earlier in life. Those with greater bite forces require less time to consume certain prey items as a greater bite force can increase the net rate of energy intake when foraging and enhance fitness in durophagous species. In the order Carnivora there are two dietary categories of durophagy; bonecrackers and bamboo eaters. Bonecrackers are exemplified by hy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorset
Dorset ( ; archaically: Dorsetshire , ) is a county in South West England on the English Channel coast. The ceremonial county comprises the unitary authority areas of Bournemouth, Christchurch and Poole and Dorset (unitary authority), Dorset. Covering an area of , Dorset borders Devon to the west, Somerset to the north-west, Wiltshire to the north-east, and Hampshire to the east. The county town is Dorchester, Dorset, Dorchester, in the south. After the Local Government Act 1972, reorganisation of local government in 1974, the county border was extended eastward to incorporate the Hampshire towns of Bournemouth and Christchurch. Around half of the population lives in the South East Dorset conurbation, while the rest of the county is largely rural with a low population density. The county has a long history of human settlement stretching back to the Neolithic era. The Roman conquest of Britain, Romans conquered Dorset's indigenous Durotriges, Celtic tribe, and during the Ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warwickshire
Warwickshire (; abbreviated Warks) is a county in the West Midlands region of England. The county town is Warwick, and the largest town is Nuneaton. The county is famous for being the birthplace of William Shakespeare at Stratford-upon-Avon and Victorian novelist George Eliot, (born Mary Ann Evans), at Nuneaton. Other significant towns include Rugby, Leamington Spa, Bedworth, Kenilworth and Atherstone. The county offers a mix of historic towns and large rural areas. It is a popular destination for international and domestic tourists to explore both medieval and more recent history. The county is divided into five districts of North Warwickshire, Nuneaton and Bedworth, Rugby, Warwick and Stratford-on-Avon. The current county boundaries were set in 1974 by the Local Government Act 1972. The historic county boundaries included Coventry, Sutton Coldfield and Solihull, as well as much of Birmingham and Tamworth. Geography Warwickshire is bordered by Leicestershire to the nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temple Grafton
Temple Grafton is a village and civil parish in the Stratford district of Warwickshire, England, situated about east of Alcester and west of the county town of Warwick. The place name is misleading, the Knights Templar never having any association with the place but owing to a naming error made in the time of Henry VIII the mistake has been perpetuated. During the reign of Richard I the estate in fact belonged to the Knights Hospitaller.Old Warwickshire Churches, W Hobart Bird 1936 During the reign of Edward III in 1347 the village was recorded as Grafton ''Superior'' while neighbouring Ardens Grafton was named ''Inferior''William Dugdale, ''The Antiquities of Warwickshire'', 1656 History Temple Grafton was alleged to have been granted to Evesham Abbey by Ceolred King of Mercia in 710. But it is also said to have been given by Edward the Confessor in 1055, and is included among the 36 manors acquired by Abbot Ethelwig (1055–77); the 8th-century charter is probably a forger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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