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Luis Chiappe
Luis María Chiappe (born 18 June 1962) is an Argentine paleontologist born in Buenos Aires who is best known for his discovery of the first sauropod nesting sites in the badlands of Patagonia in 1997 and for his work on the origin and early evolution of Mesozoic birds. He is currently the Vice President of Research and Collections at the Natural History Museum of Los Angeles County and director of the museum's Dinosaur Institute. He was a postdoctoral researcher at the American Museum of Natural History, New York after immigrating from Argentina. Chiappe is currently the curator of the award winning Dinosaur Hall at the Natural History Museum of Los Angeles County, an adjunct professor at the University of Southern California, BBC advisor and author of scientific and popular books. Chiappe is a fellow of the John Simon Guggenheim Memorial Foundation, a laureate of the Alexander Humboldt Foundation, and a research fellow at the Chinese Academy of Geological Sciences, Beijing. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Of America
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science (journal)
''Science'', also widely referred to as ''Science Magazine'', is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is over 400,000 people. ''Science'' is based in Washington, D.C., United States, with a second office in Cambridge, UK. Contents The major focus of the journal is publishing important original scientific research and research reviews, but ''Science'' also publishes science-related news, opinions on science policy and other matters of interest to scientists and others who are concerned with the wide implications of science and technology. Unlike most scientific journals, which focus on a specific field, ''Science'' and its rival ''Nature (journal), Nature'' c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kelenken
''Kelenken'' is a genus of phorusrhacid ("terror bird"), an extinct group of large, predatory birds, which lived in what is now Argentina in the middle Miocene about 15 million years ago. The only known specimen was discovered by high school student Guillermo Aguirre-Zabala in Comallo, in the region of Patagonia, and was made the holotype of the new genus and species ''Kelenken guillermoi'' in 2007. The genus name references a spirit in Tehuelche people, Tehuelche mythology, and the Specific name (zoology), specific name honors the discoverer. The holotype consists of one of the most complete skulls known of a large phorusrhacid, as well as a tarsometatarsus lower leg bone and a Phalanx bone, phalanx toe bone. The discovery of ''Kelenken'' clarified the anatomy of large phorusrhacids, as these were previously much less well known. The closest living relatives of the phorusrhacids are the seriemas. ''Kelenken'' was found to belong in the subfamily Phorusrhacinae, along with for exa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhongornis
''Zhongornis'' (meaning "intermediate bird"Li, D.; Sulliven, C.; Zhou, Z; Zhang, Z. (2010). "Basal birds from China: a brief review." ''Chinese Birds'', 1(2): 83-96 ) is a genus of primitive avialan that lived during the Early Cretaceous. It was found in rocks of the Yixian Formation in Lingyuan City (China), and described by Gao et al. in 2008.Gao, Cunling; Chiappe, L.M.; Meng, Q.; O'Connor, J.K.; Wang, X.; Cheng, X.; Liu, J. (2008) "A New Basal Lineage Of Early Cretaceous Birds From China And Its Implications On The Evolution Of The Avian Tail." "Palaeontology" Vol. 51, Part 4, pp. 775-791. ''Zhongornis'' has only one described species, ''Zhongornis haoae''. The only specimen is a fossil slab and counterslab numbered D2455/6. It is in the collection of the Dalian Natural History Museum. It is a fairly complete skeleton about eight centimeters in length. Pores in the bones and unfused sutures in the skeleton indicate that the specimen was a juvenile, but the authors believe th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hollanda Luceria
''Hollanda'' is a genus of small ground birds known from fossils found in the Barun Goyot Formation of Mongolia. Found at Khermeen Tsav, it dates from the late Cretaceous period (Campanian stage), about 75 million years ago. Known only from partial hind limbs, ''Hollanda'' has long legs with an unusual configuration of the toes. These indicate that it was a fast-running ground bird, possibly similar to the modern Roadrunner.Bell, A.K., Chiappe, L.M., Erickson, G.M., Suzuki, S., Watabe, M., Barsbold, R. and Tsogtbaatar, K. (2010). "Description and ecologic analysis of ''Hollanda luceria'', a Late Cretaceous bird from the Gobi Desert (Mongolia)." ''Cretaceous Research'', 31(1): 16-26. Its relationships are uncertain. Some studies have found that it was an relatively advanced bird, a member of the Ornithurae, related to birds like ''Ichthyornis''. Other studies have recovered it as a member of the primitive family Songlingornithidae. A more expansive study found it as an enantiornit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longicrusavis
''Longicrusavis'' (meaning "long shin bird" in Latin) is an extinct genus of basal ornithuromorph bird found only at Dawangzhangzi village in Liaoning Province, China. ''Longicrusavis'' was a ground dwelling carnivore, a wader, and part of biological family Hongshanornithidae, considered to have been a dominant species in the Jehol Biota, the prehistoric Chinese ecosystem which supported them. The name Hongshanornithidae represents one of China's oldest recorded cultures in the region, the Hongshan culture. Description ''Longicrusavis'' is a ground dwelling carnivore known from the holotype specimen PKUP V1069, found from the Lower Cretaceous Yixian Formation in Liaoning Province, China., which consists of shale slab and counter slab. The skeleton is nearly complete and belongs to an adult individual, with carbonized feathers preserved in full plumage with visible colouration around the head and forelimbs. Like the closely related genus '' Hongshanornis'', ''Longicrusavis'' ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shenqiornis
''Shenqiornis'' is a bird genus of the Enantiornithes.Wang, X., J. O'Connor, B. Zhao, L.M. Chiappe, C. Gao and X. Cheng. (2010) New species of Enantiornithes (Aves: Ornithothoraces) from the Qiaotou Formation in Northern Hebei, China. ''Acta Geologica Sinica'', 84(2):247-256. It was found in the Qiaotou Member of the Huajiying Formation of Hebei Province, China, and is therefore of uncertain age. The Qiaotou Member may correlate with the more well-known Early Cretaceous Yixian Formation, and so probably is dated to the Aptian, around 122 million years ago.Jin, F., Zhang, F.C., Li, Z.H., Zhang, J.Y., Li, C. and Zhou, Z.H. (2008). "On the horizon of ''Protopteryx'' and the early vertebrate fossil assemblages of the Jehol Biota." ''Chinese Science Bulletin'', 53(18): 2820-2827. The type species ''Shenqiornis mengi'' was in 2010 named and described by Wang Xuri, Jingmai O'Connor, Zhao Bo, Luis María Chiappe, Gao Chunling and Cheng Xiaodong. The generic name combines a reference to S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulcavis
''Sulcavis'' is a genus of enantiornithean birds. One species is named, ''Sulcavis geeorum''. The fossil was found in Early Cretaceous (121-125 million years ago) rocks in Liaoning Province, China. ''Sulcavis'' is the first discovery of a bird with ornamented tooth enamel. The enantiornitheans are unique among birds in showing minimal tooth reduction and a diversity of dental patterns. ''Sulcavis'' had robust teeth with grooves on the inside surface, which likely strengthened the teeth against harder food items. No previous bird species have preserved ridges, striations, serrated edges, or any other form of dental ornamentation. Discovery The holotype of ''Sulcavis'', BMNH Ph-000805, is discovered near the town of Lamadong, in Liaoning Province, China. The fossil was found in the Yixian Formation, an Early Cretaceous rock formation. The genus was described on January 9, 2013, in an article that was published in the ''Journal of Vertebrate Paleontology'' by Jingmai Kathleen O'C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overosaurus
''Overosaurus'' (meaning "Overo lizard", after the Cerro Overo locality) is an extinct genus of sauropod dinosaurs, containing only a single species, ''Overosaurus paradasorum''. This species lived approximately 86 to 84 million years ago during the latter part of the Cretaceous Period in what is now Patagonia (in southern Argentina). ''Overosaurus paradasorum'' was relatively small compared to other sauropods from Patagonia, like the saltasaurids and other aeolosaurines, estimated as approximately . It was a ground-dwelling herbivore. Discovery and naming The only known specimen of ''Overosaurus paradasorum'' was recovered at the Cerro Overo locality in Patagonia, Argentina. The specimen was collected in 2002 by researchers from the Museo Carmen Funes, the Museo Argentino Urquiza, and the Natural History Museum of Los Angeles County, in terrestrial sediments deposited during the Campanian stage of the Late Cretaceous period, approximately 84 to 78 million years ago. This speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhouornis
''Zhouornis'' is an extinct genus of enantiornithine bird known from the Early Cretaceous Jehol Group (Aptian stage) of western Liaoning Province, northeastern China. ''Zhouornis'' was first named by Zihui Zhang, Luis M. Chiappe, Gang Han and Anusuya Chinsamy in 2013 and the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ... is ''Zhouornis hani''. References {{Taxonbar, from=Q16760511 Enantiornitheans Bird genera Early Cretaceous birds of Asia Fossil taxa described in 2013 Paleontology in Liaoning ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Changyuraptor
''Changyuraptor '' is a genus of "four-winged", predatory dinosaurs. It is known from a single fossil specimen representing the species ''Changyuraptor yangi'', which was discovered from Early Cretaceous (125 million year old) deposits in Liaoning Province, China. ''C. yangi'' belongs to the group of dromaeosaurid theropod dinosaurs called the Microraptoria. At the time of its discovery, ''C. yangi'' was the largest four-winged dinosaur known and among the largest Mesozoic flying paravians, volant true birds seldom approaching its size.Nicholas R. Longrich; David M. Martill; Brian Andres (2018). "Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary". PLOS Biology. 16 (3): e2001663. Description Analysis of the fossil at the University of Cape Town, South Africa reveals that the specimen was a fully grown adult, approximately long and estimated to weigh , roughly the size of a turkey. These dimensions make ''Chang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gansus
''Gansus'' is a genus of aquatic birds that lived during the Aptian age of the Early Cretaceous (Aptian-Albian) period in what are now Gansu and Liaoning provinces, western China. The rock layers from which their fossils have been recovered are dated to 120 million years ago.Ji, S.-A. Atterholt, J. O'Connor, J.K. Lamanna, M.C. Harris, J.D. Li, D.-Q. You, H.-L. & Dodson, P. (2011A new, three-dimensionally preserved enantiornithine bird (Aves: Ornithothoraces) from Gansu Province, north-western China ''Zoological Journal of the Linnean Society'' 162(1):201–219. It was first described in 1984 on the basis of an isolated left leg.Hou, L. & Liu, Z. (1984) A new fossil bird from Lower Cretaceous of Gansu and early evolution of birds. ''Sci. Sin. Ser. B.'' 27:1296−1302. It is the oldest-known member of the Ornithurae, the group which includes modern birds (Neornithes) and extinct related groups, such as ''Ichthyornis'' and Hesperornithes.O’Connor, J.K & Zhou, Z. (2012A redescription ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
