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Basking Shark
The basking shark (''Cetorhinus maximus'') is the second-largest living shark and fish, after the whale shark, and one of three plankton-eating shark species, along with the whale shark and megamouth shark. Adults typically reach in length. It is usually greyish-brown, with mottled skin, with the inside of the mouth being white in color. The caudal fin has a strong lateral keel and a crescent shape. Other common names include bone shark, elephant shark, sail-fish, and sun-fish. In Orkney, it is commonly known as hoe-mother (sometimes contracted to homer), meaning "the mother of the pickled dog-fish". The basking shark is a cosmopolitan migratory species, found in all the world's temperate oceans. A slow-moving filter feeder, its common name derives from its habit of feeding at the surface, appearing to be basking in the warmer water there. It has anatomical adaptations for filter-feeding, such as a greatly enlarged mouth and highly developed gill rakers. Its snout is conic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri Marie Ducrotay De Blainville
Henri Marie Ducrotay de Blainville (; 12 September 1777 – 1 May 1850) was a French zoologist and anatomist. Life Blainville was born at Arques, near Dieppe. As a young man he went to Paris to study art, but ultimately devoted himself to natural history. He attracted the attention of Georges Cuvier, for whom he occasionally substituted as lecturer at the Collège de France and at the Athenaeum Club, London. In 1812 he was aided by Cuvier in acquiring the position of assistant professor of anatomy and zoology in the Faculty of Sciences at Paris. Eventually, relations between the two men soured, a situation that ended in open enmity. In 1819, Blainville was elected a member of the American Philosophical Society in Philadelphia. In 1825 he was admitted a member of the French Academy of Sciences; and in 1830 he was appointed to succeed Jean-Baptiste Lamarck in the chair of natural history at the museum. Two years later, on the death of Cuvier, he obtained the chair of comparative a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Continued overexploitation can lead to the destruction of the resource, as it will be unable to replenish. The term applies to natural resources such as water aquifers, grazing pastures and forests, wild medicinal plants, fish stocks and other wildlife. In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at an unsustainable rate, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology, the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope Carbon-13, 13C in the atmosphere was exceptionally low in comparison with the more common isotope Carbon-12, 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Popigai impact structure, Siberia and in what is now ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keasius
''Keasius'' is an extinct genus of basking sharks that lived during the Cenozoic. It contains four valid species, which have been found in North America, Europe, and Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest contine .... References Cetorhinidae Prehistoric shark genera {{shark-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles John Cornish
Charles John Cornish (28 September 1858 – 30 January 1906) was an English naturalist and author. Life Born on 28 September 1858 at Salcombe House, near Sidmouth, the residence of his grandfather, Charles John Cornish, J.P., D.L., was eldest son of Charles John Cornish, then curate of Sidbury, Devon, by his first wife, Anne Charlotte Western (died 1887). He was brought up at Debenham, Suffolk, where his father became vicar in 1859. In 1872 he entered Charterhouse School as a gownboy, and left in 1876. After time as a private tutor, he entered Hertford College, Oxford, as a commoner in 1881, was elected Brunsell exhibitioner in 1882 and Lusby scholar in 1883. In the same year he obtained a blue in association football, a second class in classical moderations in 1883, and a second class in '' literae humaniores'' in 1885. In 1885, Cornish was appointed assistant classical master at St Paul's School, London, a position he held for the rest of his life. Soon after coming to London he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurens Theodorus Gronovius
Laurens Theodoor Gronovius (1 June 1730 – 8 August 1777), also known as Laurentius Theodorus Gronovius or as Laurens Theodoor Gronow, was a Dutch naturalist born in Leiden. He was the son of botanist Jan Frederik Gronovius (1686–1762). Throughout his lifetime Gronovius amassed an extensive collection of zoological and botanical specimens. He is especially remembered for his work in the field of ichthyology, where he played a significant role in the classification of fishes. In 1754 he published the treatise , in which he described over 200 species of fish. He is also credited with developing a technique for preservation of fish skins. Today, a number of these preserved specimens are kept in the Natural History Museum in London. In 1762 he published the second edition of his father's ''Flora Virginica exhibens Plantas''. In 1763 he was elected a Fellow of the Royal Society. Legacy Gronovius is commemorated in the scientific name of a species of lizard, ''Scelotes gronovii'' a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jonathan Couch
Jonathan Couch (15 March 1789 – 13 April 1870) was a British naturalist, the only child of Richard and Philippa Couch, of a family long resident at Polperro, a small fishing village between Looe and Fowey, on the south coast of Cornwall. A blue plaque on the wall of Warren cottage commemorates his birthplace. Biography After receiving a sound classical education in Cornish schools, and some years' pupillage with two local medical men, he entered the united hospitals of Guy's and St. Thomas's in 1808, and in 1809 or early in 1810 returned to Polperro, which he was rarely to leave, dying on 13 April 1870, aged 81. For sixty years he was the doctor and trusted adviser of the village and neighbourhood, and used with remarkable shrewdness and perseverance the great opportunities afforded to a naturalist at Polperro. Natural history He trained in succession a large number of fishermen to aid him in his pursuits, and the observations made at and near Polperro during his lifetime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Alexandre Lesueur
Charles Alexandre Lesueur (1 January 1778 in Le Havre – 12 December 1846 in Le Havre) was a French Natural history, naturalist, artist, and explorer. He was a prolific natural-history collector, gathering many type specimens in Australia, Southeast Asia, and North America, and was also responsible for describing numerous species, including the spiny softshell turtle (''Apalone spinifera''), smooth softshell turtle (''Apalone mutica, A. mutica''), and common map turtle (''Graptemys geographica''). Both Mount Lesueur and Lesueur National Park in Western Australia are named in his honor. Early life Charles Alexandre Lesueur was born on January 1, 1778, to Jean-Baptiste Denis Lesueur and Charlotte Thieullent. Charlotte died when Charles was sixteen years old, and Charles' maternal grandmother took care of him and his siblings. Charles attended the Collège du Havre and possibly the Ecole publique des mathématiques et d'hydrographie. He was in military service in a cadet bat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norway
Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of Norway. Bouvet Island, located in the Subantarctic, is a dependency of Norway; it also lays claims to the Antarctic territories of Peter I Island and Queen Maud Land. The capital and largest city in Norway is Oslo. Norway has a total area of and had a population of 5,425,270 in January 2022. The country shares a long eastern border with Sweden at a length of . It is bordered by Finland and Russia to the northeast and the Skagerrak strait to the south, on the other side of which are Denmark and the United Kingdom. Norway has an extensive coastline, facing the North Atlantic Ocean and the Barents Sea. The maritime influence dominates Norway's climate, with mild lowland temperatures on the se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johan Ernst Gunnerus
Johan Ernst Gunnerus (26 February 1718 – 25 September 1773) was a Norway, Norwegian bishop and botanist. Gunnerus was born at Oslo, Christiania. He was bishop of the Diocese of Nidaros from 1758 until his death and also a professor of theology at the University of Copenhagen. Biography Gunnerus was born and raised in Oslo, Christiania in Norway. He enrolled at the University of Copenhagen in Denmark in 1737, but had to postpone his studies for three years because of poverty. He studied in Copenhagen from 1740, at Martin Luther University of Halle-Wittenberg, Halle in Germany from 1742, and at Friedrich-Schiller-Universität Jena, Jena from 1744, where he received his Magister degree in 1745 and in 1753 was admitted to the Faculty of Philosophy. At Jena he published extensively, notably a work on natural and international law in eight volumes. In 1754 he was recalled to Denmark and appointed Professor and Rector at Herlufsholm. In 1758 he became Bishop of the Diocese of Nidaros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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