|
Rhinoptera Bonasus, Cownose Stingray Teeth
''Rhinoptera'' is a genus of Batoidea, ray commonly known as the cownose rays. This genus is the only member of the family (biology), family Rhinopteridae. These rays feed on mollusks and various other benthic prey. Their low fecundity rate and late maturity makes them susceptible to overfishing. All species of this genus are included in the IUCN Red List of Threatened species. Species There are currently 8 recognized extant (living) species in this genus: There are several other extinct species that only are known from fossil remains: * †''Rhinoptera prisca'' Woodward, 1907 * †''Rhinoptera rasilis'' Böhm, 1926 * †''Rhinoptera raeburni'' White, 1934 * †''Rhinoptera schultzi'' Hiden, 1995 * †''Rhinoptera sherborni'' White, 1926 * †''Rhinoptera smithii'' Jordan & Beal, 1913 * †''Rhinoptera studeri'' Louis Agassiz, Agassiz, 1843 * †''Rhinoptera woodwardi'' Agassiz, 1843 See also * List of prehistoric cartilaginous fish References Rhinoptera, Ray gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinoptera Steindachneri
The golden cownose ray or Pacific cownose ray (''Rhinoptera steindachneri'') is a species of Batoidea, ray. It is found in the East Pacific along the coast of Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, and Peru. Its natural habitats are open seas, shallow seas, subtidal aquatic beds, estuarine waters, intertidal marshes, and coastal saline lagoons. They are often in schools, and sometimes associated with the spotted eagle ray''.'' Like all members of eagle rays, they demonstrate ovoviviparity. Ovulation and birth occurred in May, June and July, with a low fecundity, large size at maturity and birth and a continuous and synchronous annual reproductive cycle. According to Joseph Bizzarro, J. Bizzarro, Wade Smith, :es:J. Fernando Márquez FarÃas, J. Fernando Márquez-FarÃas, and Robert Hueter, Robert E. Hueter, these rays are not of much value within fisheries and are harmless to humans, however one of the main threats to this spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinoptera Javanica
The flapnose ray or Javanese cownose ray (''Rhinoptera javanica'') is a species of fish in the family Rhinopteridae. It is found in the Indo-Pacific off China, India, Indonesia, Iran, Japan, Madagascar, Malaysia, Mozambique, Pakistan, the Philippines, Seychelles, Somalia, South Africa, Sri Lanka, Taiwan, Tanzania, Thailand, Vietnam and possibly Australia. Its natural habitats are open seas, shallow seas, subtidal aquatic beds, coral reefs, estuarine waters, and coastal saline lagoon A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') an ...s. Conservation The Javanese cownose ray's population has undergone alarming declines throughout its range. In various regions, substantial population reductions have been observed, ranging from 50% to 79% over the last three generation lengths (44 yea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinoptera Prisca
''Rhinoptera'' is a genus of ray commonly known as the cownose rays. This genus is the only member of the family Rhinopteridae. These rays feed on mollusks and various other benthic prey. Their low fecundity rate and late maturity makes them susceptible to overfishing. All species of this genus are included in the IUCN Red List of Threatened species. Species There are currently 8 recognized extant (living) species in this genus: There are several other extinct species that only are known from fossil remains: * †'' Rhinoptera prisca'' Woodward, 1907 * †''Rhinoptera rasilis'' Böhm, 1926 * †'' Rhinoptera raeburni'' White, 1934 * †'' Rhinoptera schultzi'' Hiden, 1995 * †'' Rhinoptera sherborni'' White, 1926 * †'' Rhinoptera smithii'' Jordan & Beal, 1913 * †'' Rhinoptera studeri'' Agassiz, 1843 * †'' Rhinoptera woodwardi'' Agassiz, 1843 See also * List of prehistoric cartilaginous fish This list of prehistoric cartilaginous fish genera is an attempt to create ... [...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] |
Extinct
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and recover. As a species' potential Range (biology), range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxon, Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the Fossil, fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include Dinosaur, non-avian dinosaurs, Machairodontinae, saber-toothed cats, and mammoths. Through evolution, species arise through the process of specia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oliver Peebles Jenkins
Oliver Peebles Jenkins (November 3, 1850 in Bantam, Ohio – January 9, 1935 in Palo Alto, California) was an American physiologist and histologist, mainly associated with Stanford University. Career Jenkins graduated from Moores Hill College (now the University of Evansville) in 1869 and served as a teacher, high school principal and superintendent in the public school systems of Indiana, Wisconsin and California, returning to Moores Hill College in 1876 to take up a post as a professor. In 1883 he was appointed to the faculty of the Indiana State Normal School (now Indiana State University) at Terre Haute and he became Professor of Biology at DePauw University in 1886 where he remained until 1891. In that year he was appointed a founding faculty member at Stanford University and he remained there until he retired in 1916 when he was Professor Emeritus of Physiology. He collected specimens on expeditions with David Starr Jordan and Barton Warren Evermann and he wrote works on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinoptera Steindachneri Galapagos
''Rhinoptera'' is a genus of ray commonly known as the cownose rays. This genus is the only member of the family Rhinopteridae. These rays feed on mollusks and various other benthic prey. Their low fecundity rate and late maturity makes them susceptible to overfishing. All species of this genus are included in the IUCN Red List of Threatened species. Species There are currently 8 recognized extant (living) species in this genus: There are several other extinct species that only are known from fossil remains: * †''Rhinoptera prisca'' Woodward, 1907 * †''Rhinoptera rasilis'' Böhm, 1926 * †'' Rhinoptera raeburni'' White, 1934 * †'' Rhinoptera schultzi'' Hiden, 1995 * †'' Rhinoptera sherborni'' White, 1926 * †'' Rhinoptera smithii'' Jordan & Beal, 1913 * †'' Rhinoptera studeri'' Agassiz, 1843 * †'' Rhinoptera woodwardi'' Agassiz, 1843 See also * List of prehistoric cartilaginous fish This list of prehistoric cartilaginous fish genera is an attempt to create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Douglas Ogilby
James Douglas Ogilby (16 February 1853 – 11 August 1925) was an Australian ichthyologist and herpetologist. Ogilby was born in Belfast, Ireland, and was the son of zoologist William Ogilby and his wife Adelaide, née Douglas. He received his education at Winchester College, England, and Trinity College, Dublin. Ogilby worked for the British Museum before joining the Australian Museum in Sydney. After being let go for drunkenness in 1890, he picked up contract work before joining the Queensland Museum in Brisbane circa 1903. He was the author of numerous scientific papers on reptiles, and he described a new species of turtle and several new species of lizards. Death Ogilby died on 11 August 1925 at the Diamantina Hospital in Brisbane and was buried at Toowong Cemetery. Legacy Numerous species of fish were named in Ogilby's honor: *''Callionymus ogilbyi'' (Rayfinned Fish) *''Calliurichthys ogilbyi'' (Ogilby’s Stinkfish) *''Cynoglossus ogilbyi'' (Tongue Sole) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinoptera Neglecta
''Rhinoptera neglecta'', the Australian cownose ray, is a species of the Rhinopteridae family. It is found in the Western Pacific Ocean from Queensland to New South Wales in Australia. The species is 86 centimeters long. Status As of 2015, the IUCN listed ''Rhinoptera neglecta'' as Data Deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessaril .... References neglecta {{Rajiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Étienne Geoffroy Saint-Hilaire
Étienne Geoffroy Saint-Hilaire (; 15 April 177219 June 1844) was a French naturalist who established the principle of "unity of composition". He was a colleague of Jean-Baptiste Lamarck and expanded and defended Lamarck's evolutionary theories. Geoffroy's scientific views had a transcendental flavor (unlike Lamarck's materialistic views) and were similar to those of German morphologists like Lorenz Oken. He believed in the underlying unity of organismal design, and the possibility of the transmutation of species in time, amassing evidence for his claims through research in comparative anatomy, paleontology, and embryology. He is considered as a predecessor of the evo-devo evolutionary concept. Life and early career Geoffroy was born at Étampes (in present-day Essonne), and studied at the Collège de Navarre, in Paris, where he studied natural philosophy under M. J. Brisson. He then attended the lectures of Louis-Jean-Marie Daubenton at the College de France and Fourcroy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinoptera Marginata
''Rhinoptera marginata'', the Lusitanian cownose ray, is a species of ray found along the western coast of Africa and Mediterranean Sea. It is apparently rare in the Mediterranean Sea, but is common in shallow waters off the western Africa. In February 2024, the species was added to the appendices of the Convention on the Conservation of Migratory Species of Wild Animals, with the species added to Appendix II, and the Mediterranean Sea population of the same species added to Appendix I. Description Its maximum width is . Distribution It is found in the eastern Atlantic from Portugal to the Central African coast and in the eastern part of the Mediterranean Sea.Guide of Mediterranean Skates and Rays (''Rhinoptera marginata''). Oct. 2022. Mendez L., Bacquet A. and F. Briand.http://www.ciesm.org/Guide/skatesandrays/rhinoptera-marginata Life cycle They exhibit ovoviviparity Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a "bridging" form of reproduction betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinoptera Marginata 2-transformed
''Rhinoptera'' is a genus of Batoidea, ray commonly known as the cownose rays. This genus is the only member of the family (biology), family Rhinopteridae. These rays feed on mollusks and various other benthic prey. Their low fecundity rate and late maturity makes them susceptible to overfishing. All species of this genus are included in the IUCN Red List of Threatened species. Species There are currently 8 recognized extant (living) species in this genus: There are several other extinct species that only are known from fossil remains: * †''Rhinoptera prisca'' Woodward, 1907 * †''Rhinoptera rasilis'' Böhm, 1926 * †''Rhinoptera raeburni'' White, 1934 * †''Rhinoptera schultzi'' Hiden, 1995 * †''Rhinoptera sherborni'' White, 1926 * †''Rhinoptera smithii'' Jordan & Beal, 1913 * †''Rhinoptera studeri'' Louis Agassiz, Agassiz, 1843 * †''Rhinoptera woodwardi'' Agassiz, 1843 See also * List of prehistoric cartilaginous fish References Rhinoptera, Ray gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
