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Spurdog
''Squalus'' is a genus of dogfish sharks in the family Squalidae. Commonly known as spurdogs, these sharks are characterized by smooth dorsal fin spines, teeth in upper and lower jaws similar in size, caudal peduncle with lateral keels; upper precaudal pit usually present, and caudal fin without subterminal notch. In spurdogs, the hyomandibula (the bone connecting the braincase to the jaws) is oriented at a right angle to the neurocranium, while in other sharks, the hyomandibula runs more parallel to the body. This led some to think that the upper jaw of ''Squalus'' would not be as protractile as the jaws of other sharks. However, a study that compared different jaw suspension types in sharks showed that this is not the case and that ''Squalus'' is quite capable of protruding its upper jaw during feeding.Wilga, C.D., Motta, P.J. & Sanford, C.P. (2007): Evolution and ecology of feeding in elasmobranchs. ''Integrative and Comparative Biology, 47 (1): 55-69.'' The name comes from '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dogfish Shark
Squalidae, more commonly known as dogfish, dog sharks, or spiny dogfish, are one of several families of sharks categorized under Squaliformes, making it the second largest order of sharks, numbering 119 species across 7 families. Having earned their name after a group of fishermen reportedly observed the species chasing down smaller fish in dog-like packs, dogfish have slender, streamlined bodies, usually more compact in comparison to other species, and a pointed snout. Dogfish likewise have two dorsal fins, each with smooth spines, but no anal fin, and their skin is generally rough to the touch. As the species reaches adulthood, males usually measure a maximum of 39 inches (990 mm), while females typically measure 49 inches (1,200 mm) long. The species therefore exhibits female-dominant sexual dimorphism. Dogfish sharks have slate-gray or gray-brown skin with white dots that becomes paler (almost white) around the belly region. These sharks are characterized by teeth i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiny Dogfish
The spiny dogfish (''Squalus acanthias''), spurdog, mud shark, or piked dogfish is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order. While these common names may apply to several species, ''Squalus acanthias'' is distinguished by two spines (one anterior to each dorsal fin) and no anal fin. It lives in shallow waters and further offshore in most parts of the world, especially in temperate waters. Those in the northern Pacific Ocean were reevaluated in 2010 and found to constitute a separate species, now called the Pacific spiny dogfish (''Squalus suckleyi''). Description and behaviour The spiny dogfish has dorsal fins, no anal fin, and white spots along its back. The caudal fin has asymmetrical lobes, forming a heterocercal tail. The species name ''acanthias'' refers to the shark's two spines. These are used defensively. If captured, the shark can arch its back to pierce its captor with spines near the dorsal f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Robert Last
Peter Robert Last is an Australian ichthyologist, curator of the Australian National Fish Collection and a senior principal research scientist at CSIRO Marine and Atmospheric Research (CMAR) in Hobart, Tasmania. He is an elasmobranch expert and has described many new species of shark. Last graduated from the University of Tasmania in 1983 with a PhD titled "Aspects of the ecology and zoogeography of fishes from soft-bottom habitats of the Tasmanian shore zone". Last is the co-author of ''Sharks and Rays of Australia'' and co-author of ''A revision of the Australian handfishes (Lophiiformes: Brachionichthyidae), with descriptions of three new genera and nine new species''. In 2009, the Australian Society for Fish Biology awarded Last its highest honour, the K. Radway Allen Award The K. Radway Allen Award is the highest honour awarded by the Australian Society for Fish Biology. It recognises individuals who have made an "outstanding contribution in fish or fisheries science." ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarah Tházia Viana De Figueirêdo
Sarah (born Sarai) is a biblical matriarch and prophetess, a major figure in Abrahamic religions. While different Abrahamic faiths portray her differently, Judaism, Christianity, and Islam all depict her character similarly, as that of a pious woman, renowned for her hospitality and beauty, the wife and half-sister of Abraham, and the mother of Isaac. Sarah has her feast day on 1 September in the Catholic Church, 19 August in the Coptic Orthodox Church, 20 January in the LCMS, and 12 and 20 December in the Eastern Orthodox Church. In the Hebrew Bible Family According to Book of Genesis 20:12, in conversation with the Philistine king Abimelech of Gerar, Abraham reveals Sarah to be both his wife and his half-sister, stating that the two share a father but not a mother. Such unions were later explicitly banned in the Book of Leviticus (). This would make Sarah the daughter of Terah and the half-sister of not only Abraham but Haran and Nahor. She would also have been the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marcelo Rodrigues De Carvalho
Marcelo is a given name, the Spanish and Portuguese form of Marcellus. The Italian version of the name is Marcello, differing in having an additional "l". Marcelo may refer to: *Marcelo Costa de Andrade (born 1967), Brazilian serial killer, rapist, and necrophile *Marcelinho Carioca (Marcelo Pereira Surcin born 1971 in RJ), Brazilian international midfielder in 1990s *Marcelinho Machado (born 1975), Brazilian professional basketball player * Marcelinho Paraíba (Marcelo dos Santos b. 1975 in Paraíba state), Brazilian international midfielder * Marcelinho Paulista (Marcelo José de Souza born 1973 in SP state), Brazilian youth international in 1996 Olympics * Marcelo (footballer, born January 1987), Brazilian footballer * Marcelo (footballer, born May 1987), Brazilian footballer, who played for Lyon *Marcelo (footballer, born 1988), Brazilian footballer, who played for Real Madrid *Marcelo (footballer, born 1989), Brazilian footballer, who plays for Paços Ferreira *Marcelo Arriag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulisses Leite Gomes
Ulisses is a Portuguese-language given name. It is the Portuguese form of the English name Ulysses, which itself derives from a Latin form of Odysseus (a legendary Greek king). People with the name * Ulisses Soares (born 1958), Brazilian official in the Church of Jesus Christ of Latter-day Saints * Ulisses Morais (born 1959), Portuguese footballer * Ulisses Correia e Silva (born 1962), Prime Minister of Cape Verde * Ulisses Braga Neto (born 1971), Brazilian academic * Ulisses (footballer, born 1986), full name Ulisses Alves da Silveira, Brazilian football left-back * Ulisses (footballer, born 1989), full name Ulisses Rocha de Oliveira, Brazilian football midfielder * Ulisses Garcia (born 1996), Swiss footballer * Ulisses (footballer, born 1999), full name Ulisses Wilson Jeronymo Rocha, Brazilian football defender See also * Ulises, the Spanish variant of the name * Ulises (orca) Ulises (also spelled Ulysses) is a male orca who lives at SeaWorld San Diego in California. He was c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squalus Albifrons
''Squalus albifrons'', the eastern highfin spurdog, is a dogfish described in 2007. It is a member of the family Squalidae, found on the continental shelf off Queensland, Australia, at depths between 220 and 510 m. The length of the longest specimen measured is . Its reproduction is ovoviviparous Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a term used as a "bridging" form of reproduction between egg-laying oviparous and live-bearing viviparous reproduction. Ovoviviparous animals possess embryos that develop insi .... References {{Taxonbar, from=Q2891490 albifrons Marine fish of Eastern Australia Fish described in 2007 Taxa named by Peter R. Last Taxa named by William Toby White Taxa named by John D. Stevens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campanian
The Campanian is the fifth of six ages of the Late Cretaceous Epoch on the geologic timescale of the International Commission on Stratigraphy (ICS). In chronostratigraphy, it is the fifth of six stages in the Upper Cretaceous Series. Campanian spans the time from 83.6 (± 0.2) to 72.1 (± 0.2) million years ago. It is preceded by the Santonian and it is followed by the Maastrichtian. The Campanian was an age when a worldwide sea level rise covered many coastal areas. The morphology of some of these areas has been preserved: it is an unconformity beneath a cover of marine sedimentary rocks. Etymology The Campanian was introduced in scientific literature by Henri Coquand in 1857. It is named after the French village of Champagne in the department of Charente-Maritime. The original type locality was a series of outcrop near the village of Aubeterre-sur-Dronne in the same region. Definition The base of the Campanian Stage is defined as a place in the stratigraphic col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Toby White
William Toby White is an Australian ichthyologist. He studies speciation and biodiversity of shark, ray, and skate species (subclass Elasmobranchii) through morphological and molecular systematics. Education White received bachelor's (1997) and doctoral (2003) degrees in Biological Science from Murdoch University in Perth, Australia. His doctoral thesis, "Aspects of the biology of elasmobranchs in a subtropical embayment in Western Australia and of chondrichthyan fisheries in Indonesia", examined 1) spatial partitioning of food resources available to shark, ray, and skate species in Shark Bay (off the western coast of Australia), and 2) the relative frequencies of shark, ray, and skate species caught in fisheries off the coast of southeastern Indonesia. From 2004 to 2006 he did post-doctoral training, also at Murdoch University. Professional career Since 2006, White has served as ichthyologist at the Australian National Fish Collection which is part of the CSIRO Marine and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John D
John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second Epistle of John, often shortened to 2 John * Third Epistle of John, often shortened to 3 John People * John the Baptist (died c. AD 30), regarded as a prophet and the forerunner of Jesus Christ * John the Apostle (lived c. AD 30), one of the twelve apostles of Jesus * John the Evangelist, assigned author of the Fourth Gospel, once identified with the Apostle * John of Patmos, also known as John the Divine or John the Revelator, the author of the Book of Revelation, once identified with the Apostle * John the Presbyter, a figure either identified with or distinguished from the Apostle, the Evangelist and John of Patmos Other people with the given name Religious figures * John, father of Andrew the Apostle and Saint Peter * Po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
