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Río Neuquén Subgroup
The Río Neuquén Subgroup is a geological subgroup in the Neuquén Basin, Neuquén Province, Argentina, whose strata date back to the Late Cretaceous. The subgroup, formerly defined as a formation, is the middle unit of the Neuquén Group and contains the Plottier, Sierra Barrosa Formation,Garrido, 2011, p.237 Los Bastos Formation,Garrido, 2011, p.236 and Portezuelo Formations.Balgord & Carapa, 2014, p.6Balgord, 2017, p.455Lebinson et al., 2018, p.252 The subgroup overlies the Río Limay Subgroup and is overlain by the Río Colorado Subgroup.Leanza et al., 2004, p.63 Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, 2004, pp. 600-604 Fossil content See also * List of dinosaur-bearing rock formations This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented. * List of stratigraphic units with dinosaur body fossils * List of stratigraphic units with dinosa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Group (geology)
In geology, a group is a lithostratigraphic unit consisting of a series of related formations that have been classified together to form a group. Formations are the fundamental unit of stratigraphy. Groups may sometimes be combined into supergroups. Groups are useful for showing relationships between formations, and they are also useful for small-scale mapping or for studying the stratigraphy of large regions. Geologists exploring a new area have sometimes defined groups when they believe the strata within the groups can be divided into formations during subsequent investigations of the area. It is possible for only some of the strata making up a group to be divided into formations. An example of a group is the Glen Canyon Group, which includes (in ascending order) the Wingate Sandstone, the Moenave Formation, the Kayenta Formation, and the Navajo Sandstone. Each of the formations can be distinguished from its neighbor by its lithology, but all were deposited in the same ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Río Limay Subgroup
The Río Limay Subgroup is a geological unit of the Neuquén Group in the Neuquén Basin of Neuquén, Mendoza and Río Negro Provinces, northern Patagonia, Argentina. The strata date back to the Late Cretaceous ( Early Cenomanian to Early Turonian. The Río Limay Subgroup overlies the Lohan Cura Formation, separated by an unconformity dated to 98 Ma.Leanza et al., 2004, p.63 Dinosaur remains are among the fossils that have been recovered from the formations it contains.Weishampel et al., 2004, pp. 600-604 Having previously been considered a distinct formation, the Río Limay Subgroup is now considered a member of the larger Neuquén Group, and itself contains several specific geological formations (from youngest to oldest): * Lisandro Formation (late Cenomanian to early Turonian) * Huincul Formation (late Cenomanian) * Candeleros Formation (early Cenomanian) Fossil content See also * List of dinosaur-bearing rock formations This list of dinosaur-bearing rock format ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Dinosaur-bearing Rock Formations
This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented. * List of stratigraphic units with dinosaur body fossils * List of stratigraphic units with dinosaur trace fossils ** List of stratigraphic units with dinosaur tracks *** List of stratigraphic units with ornithischian tracks *** List of stratigraphic units with sauropodomorph tracks *** List of stratigraphic units with theropod tracks See also * Lists of fossiliferous stratigraphic units * List of fossil sites * Mesozoic {{DEFAULTSORT:Dinosaur-Bearing Rock Formations Lists of dinosaur-bearing stratigraphic units, Mesozoic paleontological sites Lists of fossiliferous stratigraphic units by preserved taxon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unenlagia Comahuensis
''Unenlagia'' (meaning "half-bird" in Latinized Mapudungun) is a genus of dromaeosaurid theropod dinosaur that lived in South America during the Late Cretaceous period. The genus ''Unenlagia'' has been assigned two species: ''U. comahuensis'', the type species described by Novas and Puerta in 1997, and ''U. paynemili'', described by Calvo ''et al.'' in 2004. Discovery and naming In 1996 in the Neuquén province of Argentina a skeleton of a theropod was discovered in the Sierra del Portezuelo and reported the same year. In 1997 Fernando Emilio Novas and Pablo Puerta named and described ''Unenlagia comahuensis''. The generic name is derived from Mapuche ''uñùm'', 'bird', and ''llag'', 'half', in reference to the fact that the describers considered the species to be a link between birds and more basal theropods. The specific name refers to the Comahue, the region the find was made. The holotype specimen, MCF PVPH 78, was uncovered in layers of the Portezuelo Formation dating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Dubium
In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium,'' it may be impossible to determine whether a specimen belongs to that group or not. This may happen if the original type series (i. e. holotype, isotype, syntype or paratype) is lost or destroyed. The zoological and botanical codes allow for a new type specimen, or neotype, to be chosen in this case. A name may also be considered a ''nomen dubium'' if its name-bearing type is fragmentary or lacking important diagnostic features (this is often the case for species known only as fossils). To preserve stability of names, the ''International Code of Zoological Nomenclature'' allows a new type specimen, or neotype, to be chosen for a ''nomen dubium'' in this case. 75.5. Replacement of unidentifiable name-bearing type by a neotype. When an author considers that the taxonomic identity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Titanosaurus
''Titanosaurus'' (; ) is a dubious genus of sauropod dinosaurs, first described by Richard Lydekker in 1877.R. Lydekker. (1877). Notices of new and other Vertebrata from Indian Tertiary and Secondary rocks. ''Records of the Geological Survey of India'' 10(1):30-43 It is known from the Maastrichtian (Upper Cretaceous) Lameta and Kallakurichi Formations of India. Discovery and naming ''Titanosaurus'', literally meaning 'titanic lizard', was named after the mythological Titans. ''Titanosaurus'' was the first Indian dinosaur to be named and properly described, having been recorded for the first time in 1877. The type species, ''T. indicus'', was named in 1877, and the second species, ''T. blanfordi'', was named in 1879.R. Lydekker. (1879). Fossil Reptilia and Batrachia. ''Memoirs of the Geological Survey of India. Palaeontologia Indica, Series IV. Indian Pretertiary Vertebrata'' 1(3):1-36 Both species were named by Richard Lydekker. ''T. indicus'' and ''T. blanfordi'' are 70 mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rinconsaurus Test 2
''Rinconsaurus'' is a genus of titanosaur sauropod dinosaur from the Late Cretaceous in what is now Argentina. The type species, ''Rinconsaurus caudamirus'', was described by Calvo and Riga in 2003, and is based on three partial skeletons. Description Like all sauropods, ''Rinconsaurus'' was a large long-necked quadrupedal animal, with a long, whip-like tail and four pillar-like legs. ''Rinconsaurus'' was an unusually slender sauropod. Although fossil discoveries are incomplete, and no complete necks or heads have been found, fully grown ''Rinconsaurus'' are estimated to have been 11 meters (36 ft) long and approximately 2.5 meters (8 ft) high at the shoulder. The body mass of ''Rinconsaurus'' has been estimated to be between 3.21 and 5.39 tonnes. Discovery and species Fossils of ''Rinconsaurus'' were discovered in 1997 by Gabriel Benítezin strata belonging to the Bajo de la Carpa Formation near Rincón de los Sauces, in the Neuquen province of Argentina. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patagonykus
''Patagonykus'' (meaning "Patagonian claw") is a genus of theropod dinosaur from the Upper Cretaceous of Argentina. This alvarezsauroid was discovered in exposures of the Portezuelo Formation (Turonian-Coniacian) of the Rio Neuquén Subgroup in the Neuquén Basin, Neuquen Province of Patagonia, Argentina. The holotype consists of an incomplete but well-preserved skeleton, lacking a skull, but including many vertebrae, the coracoids, a partial forelimb, pelvic girdle, and hindlimbs. ''Patagonykus'' has been classed with the Alvarezsauridae, a family which includes such taxa as the Mongolian '' Mononykus'' and the Argentinian '' Alvarezsaurus''. In 2010 Gregory S. Paul estimated its length at 1 meter (3.3 ft) and its weight at 3.5 kg (7.7 lbs). Classification Agnolin ''et al.'' (2012) originally placed ''Patagonykus'' within Alvarezsauridae, within the clade Patagonykinae as sister taxon to ''Bonapartenykus''. Makovicky, Apesteguía and Gianechini (2012) found it to be in a polyto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megaraptor
''Megaraptor'' () is a genus of large Theropoda, theropod dinosaur that lived during the Turonian and Coniacian ages of the Late Cretaceous. Its fossils have been discovered in the Patagonian Portezuelo Formation of Argentina, South America. The type specimen of ''Megaraptor'' consists of a fragmentary assemblage of limb bones, discovered in 1996 by Argentine palaeontologist Fernando Novas, Fernando E. Novas. Believing that a large claw found at the site came from the animal's foot, he determined that it was probably a coelurosaur related to Dromaeosauridae, dromaeosaurs and Troodontidae, troodontids, and named it accordingly. Subsequent discoveries revealed that ''Megaraptor'''s large claw actually came from its hand. The taxonomic position of it and related genera (collectively known as Megaraptora, megaraptorans) is unknown, though it is generally regarded as either a Carnosauria, neovenatorid allosauroid or a Coelurosauria, coelurosaur, possibly related to Tyrannosauroidea, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctosaurus
''Antarctosaurus'' (; meaning "southern lizard") is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous Period (geology), Period of what is now South America. The type species, ''Antarctosaurus wichmannianus'', and a second species, ''Antarctosaurus giganteus,'' were described by prolific Germany, German paleontology, paleontologist Friedrich von Huene in 1929. Three additional species of ''Antarctosaurus'' have been named since then but later studies have considered them dubious or unlikely to pertain to the genus''.'' The type species, ''A. wichmannianus'', is controversial because there is uncertainty as to whether all the described remains belong to the same individual or even genus. The second species'', A. giganteus,'' is considered dubious, but the fragmentary remains represent one of the largest dinosaurs known. Discovery and species Remains of this dinosaur were first mentioned in print in 1916, although they were not fully described and named until a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
