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Gymnogyps Amplus
left, 150px, Tarsometatarsus.html" ;"title="Holotype Tarsometatarsus">Holotype Tarsometatarsus; Samwel Cave, Shasta County, California ''Gymnogyps amplus'' is an extinct species of large New World vulture in the family Cathartidae. The species was first described by Loye H. Miller (1911) in 1911 from a partial tarsometatarsus recovered from Pleistocene cave deposits in Samwel Cave of northern California. Harvey I. Fisher (1944) designated a set of plesiotypes from the Rancho La Brea which includes a cranium, rostrum, and mandible. The species is the only condor species found in the La Brea Tar Pits' Pit 10, which fossils date to "a Holocene radiocarbon age of 9,000 years." The smaller, modern California condor The California condor (''Gymnogyps californianus'') is a New World vulture and the largest North American land bird. It became extinct in the wild in 1987 when all remaining wild individuals were captured, but has since been reintroduced to n ... may have evolved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek () 'most' and (; Latinized as ) 'new'. The aridification and cooling trends of the preceding Neogene were continued in the Pleistocene. The climate was strongly variable depending on the glacial cycle, oscillating between cold Glacial period, glacial periods and warmer Interglacial, int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarsometatarsus
The tarsometatarsus is a bone that is only found in the lower leg of birds and some non-avian dinosaurs. It is formed from the fusion of several bird bones found in other types of animals, and homologous to the mammalian tarsus (ankle bones) and metatarsal bones (foot). Despite this, the tarsometatarsus of flying types is often referred to as just the shank, tarsus or metatarsus. Tarsometatarsal fusion occurred in several ways and extents throughout bird evolution. Paticularly, in Neornithes (modern birds), although the bones are joined along their entire length, the fusion is most thorough at the distal (metatarsal) end. In the Enantiornithes, a group of Mesozoic avialans, the fusion was complete at the proximal (tarsal) end, but the distal metatarsi were still partially distinct. While these fused bones are best known from birds and their relatives, avians are neither the only group nor the first to possess tarsometatarsi. In a remarkable case of parallel evolution, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene Birds Of North America
The Pleistocene ( ; referred to colloquially as the ''Ice Age'') is the geological epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek () 'most' and (; Latinized as ) 'new'. The aridification and cooling trends of the preceding Neogene were continued in the Pleistocene. The climate was strongly variable depending on the glacial cycle, oscillating between cold glacial periods and warmer interglacials, with the sea levels being up to lower than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnogyps
''Gymnogyps'' is a genus of New World vultures in the family Cathartidae. There are five known species in the genus, with only one being extant, the California condor. Fossil species *'' Gymnogyps amplus'' was first described by L. H. Miller in 1911 from a broken tarsometatarsus. The species is the only condor species found in the La Brea Tar Pits' Pit 10, which fossils date to "a Holocene radiocarbon age of 9,000 years." The smaller, modern California condor may have evolved from ''G. amplus''. *'' Gymnogyps howardae'' was described from the Late Pleistocene (Lujanian) asphalt deposits known as the Talara Tar Seeps, near Talara, northwestern Peru. It lived about 126,000-12,000 years ago. *'' Gymnogyps kofordi'' was described based on a right tarsometatarsus. *'' Gymnogyps varonai'' is known from fossils found in the late Pleistocene to early Holocene tar seep deposits in Cuba Cuba, officially the Republic of Cuba, is an island country, comprising the island of Cub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Condor
The California condor (''Gymnogyps californianus'') is a New World vulture and the largest North American land bird. It became extinct in the wild in 1987 when all remaining wild individuals were captured, but has since been reintroduced to northern Arizona and southern Utah (including the Grand Canyon area and Zion National Park), the coastal mountains of California, and northern Baja California in Mexico. It is the only surviving member of the genus ''Gymnogyps'', although four extinct members of the genus are also known. The species is listed by the International Union for the Conservation of Nature as Critically Endangered, and similarly considered ''Critically Imperiled'' by NatureServe. The plumage is black with patches of white on the underside of the wings; the head is largely bald, with skin color ranging from gray on young birds to yellow and bright orange on breeding adults. Its wingspan is the widest of any North American bird, and its weight of up to nearly equ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiocarbon Dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for Chronological dating, determining the age of an object containing organic material by using the properties of carbon-14, radiocarbon, a radioactive Isotopes of carbon, isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby. It is based on the fact that radiocarbon () is constantly being created in the Atmosphere of Earth, Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of it contains begins to decrease as the undergoes radioactive decay. Measuring the amount of in a sample from a dead plant or animal, such as a piece of w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvey I
Harvey, Harveys or Harvey's may refer to: Arts, entertainment, and media * ''Harvey'' (play), a 1944 play by Mary Chase about a man befriended by an invisible anthropomorphic rabbit * Harvey Awards ("Harveys"), one of the most important awards in American comic industry, founded in 1988 * "Harvey", a song by Her's off the album ''Invitation to Her's'', 2018 Films * ''Harvey'' (1950 film), a 1950 film adapted from Mary Chase's play, starring James Stewart * ''Harvey'' (1996 film), a 1996 American made-for-television remake of the 1950 film * ''Harvey'' (2023 film), a Canadian animated short film * ''Harvey'' (Hallmark), a 1972 adaptation of Mary Chase's play for the ''Hallmark Hall of Fame'' Characters * Harvey (''Farscape''), a character in the TV show ''Farscape'' * Harvey, a crane engine in ''Thomas & Friends'' * Harvey Beaks, in the Nickelodeon animated series ''Harvey Beaks'' * Harvey Birdman, title character from the teen-adult animated series ''Harvey Birdman, At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samwel Cave
Samwel is an alternate form of Samuel used in East Africa and in the Maltese language. Samwel may refer to: *Samwel Mushai Kimani (born 1989), Kenyan visually impaired middle-distance runner *Samwel Mohochi (born 1972), Kenyan human rights activist and attorney *Samwel Mwera (born 1985), Tanzanian middle distance runner *Samwel Shauri Samwel Kwaangu Shauri (born December 30, 1985) is a Tanzanian long-distance runner. Shauri represented Tanzania at the 2008 Summer Olympics in Beijing, where he competed for the men's 10,000 metres, along with his compatriots Dickson Marwa and F ... (born 1985), Tanzanian long-distance runner See also * Samwell {{given name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Ornithology
The following is a timeline of ornithology events: Until 1700 *1500–800 BC – The Vedas mention the habit of brood parasitism in the Asian koel (''Eudynamys scolopacea''). *4th century BC – Aristotle mentions over 170 sorts of birds in his work on animals. He recognises eight principal groups. *3rd century BC – The ''Erya'', a Chinese encyclopedia comprising glosses on passages in ancient texts, notably the Shi Jing, Book of Songs, features 79 entries in its chapter "Describing Birds" *1st century AD – Pliny the Elder's ''Pliny's Natural History, Historia Naturalis Book X'' is devoted to birds. Three groups based on characteristics of feet *2nd century AD – Claudius Aelianus, Aelian mentions a number of birds in his work on animals. Birds are listed alphabetically *1037 – Death of Abu ‘Ali al-Husayn ibn Abd Allah ibn Sina (known as Avicenna in Latin) author of ''Abbreviatio de animalibus'', a homage to Aristotle *c 1100 Hugh of Fouilloy authors ''De avibus'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene () is the current geologic time scale, geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene is an interglacial period within the ongoing Ice age, glacial cycles of the Quaternary, and is equivalent to Marine isotope stages, Marine Isotope Stage 1. The Holocene correlates with the last maximum axial tilt towards the Sun of the Earth#Axial tilt and seasons, Earth's obliquity. The Holocene corresponds with the rapid proliferation, growth, and impacts of the human species worldwide, including Recorded history, all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban culture, urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global significance for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cathartidae
Cathartidae, known commonly as New World vultures or condors, are a family of birds of prey consisting of seven extant species in five genera. It includes five extant vultures and two extant condors found in the Americas. They are known as "New World" vultures to distinguish them from Old World vultures, with which the Cathartidae does not form a single clade despite the two being similar in appearance and behavior as a result of convergent evolution. Like other vultures, New World vultures are scavengers, having evolved to feed off of the carcasses of dead animals without any notable ill effects. Some species of New World vulture have a good sense of smell, whereas Old World vultures find carcasses exclusively by sight. Other adaptations shared by both Old and New World vultures include a bald head, devoid of feathers which helps prevent rotting matter from accumulating while feeding, and an extremely disease-resistant digestive system to protect against dangerous pathogens fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
