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Megaraptora
Megaraptora is a clade of carnivorous theropod dinosaurs. Its derived members, the Megaraptoridae are noted for their large hand claws and powerfully-built forelimbs, which are usually reduced in size in other large theropods. Although undoubtedly members of the clade Tetanurae, their relationships to others members of this group have been subject to dispute. Megaraptorans are incompletely known, and no complete megaraptoran skeleton has been found. However, they still possessed a number of unique features. Their forelimbs were large and strongly built, and the ulna bone had a unique shape in members of the family Megaraptoridae, a subset of megaraptorans which excludes '' Fukuiraptor'' and '' Phuwiangvenator''. The first two fingers were elongated, with massive curved claws, while the third finger was small. Megaraptoran skull material is very incomplete, but a juvenile ''Megaraptor'' described in 2014 preserved a portion of the snout, which was long and slender. Leg bones ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tratayenia
''Tratayenia'' is an extinct genus of megaraptoran theropod dinosaurs known from remains found in the Santonian-age Bajo de la Carpa Formation of Argentina. The type and only species, ''Tratayenia rosalesi'', was described in March 2018. ''Tratayenia'' can be distinguished from other megaraptorans on the basis of three autapomorphies (unique derived features) of the front portion of each dorsal vertebra, as well as a single autapomorphy of the sacrum. ''Tratayenia'' is one of the youngest known genera of megaraptorans, having lived only about 83 million years ago. Discovery and naming The holotype consists of a well-preserved partial skeleton, MUCPv 1162, which includes several articulated portions of the backbone. One portion of the skeleton is a string of five dorsal vertebrae, likely the seventh to eleventh dorsals. The largest articulated portion of the skeleton is a string of vertebrae including the last two dorsals as well as the five sacrals and much of the right ilium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phuwiangvenator
''Phuwiangvenator'' () is an extinct genus of megaraptoran Theropoda, theropod that lived during the Early Cretaceous period in what is now Thailand. It contains only the type species, ''P. yaemniyomi''. The genus, generic name of ''Phuwiangvenator'' comes from the Phu Wiang mountains, where the holotype was discovered, and the Latin (language), Latin word "''venator''" meaning hunter. The Species, specific name, "''yaemniyomi''", is in honor of Paleontology in Thailand, Sudham Yaemniyom, who was a historical paleontologist from Thailand and the first person to discover fossils there. Discovery The holotype specimen of ''Phuwiangvenator'', designated SM-PW9B, is a partially-complete skeleton consisting of a dorsal vertebra, three sacral vertebrae, a right metacarpal, right manual phalanges and unguals, both tibiae, the left Astragalus (bone), astragalocalcaneum, several left metatarsals, and several right pedal phalanges and unguals. It was discovered in 1993 by a team led b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siats
''Siats'' (/see-ats/) is an extinct genus of large theropod dinosaurs known from the Late Cretaceous Cedar Mountain Formation (Mussentuchit Member) of Utah, United States. The genus contains a single species, ''Siats meekerorum''. It was initially classified as a megaraptoran, a clade of large theropods with controversial relationships. Alternative positions within the Neovenatoridae, Allosauroidea, and Tyrannosauroidea have also been proposed. Discovery and naming ''Siats'' was described by Lindsay E. Zanno and Peter J. Makovicky in 2013. The generic name references a man-eating monster in Ute mythology. The specific name ''meekerorum'' honors the geologist John Caldwell Meeker and his family for their support of paleontological research. ''Siats'' is known from the holotype specimen, FMNH PR 2716, a partial postcranial skeleton housed at the Field Museum of Natural History, Chicago. The specimen consists of five dorsal vertebrae, eight caudal vertebrae, a chevron, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fukuiraptor
''Fukuiraptor'' ("thief of Fukui") is a genus of medium-sized megaraptoran theropod dinosaur of the Early Cretaceous epoch (either Barremian or Aptian) that lived in what is now Japan. ''Fukuiraptor'' is known from the Kitadani Formation and possibly also the Sebayashi Formation. History The type specimen is a partial skeleton (designated FPDM-V97122) discovered in the Kitadani quarry near Katsuyama in the Fukui prefecture. It is thought that this specimen was not mature and an adult may have been larger. The remains of many other individuals have been found in the quarry, with numerous humeri, femurs, and teeth being assigned to this species. However, the other individuals recovered from the same locality are mostly juveniles that were smaller than the holotype (Currie & Azuma, 2006), in the smallest case less than a quarter of the holotype's size. A tooth (NDC-P0001) discovered in a block of conglomerate from the Sebayashi Formation has been referred to ''Fukuirapto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gualicho
''Gualicho'' (named in reference to the gualichu) is an enigmatic genus of theropod dinosaurs. The type species is ''Gualicho shinyae''. It lived in what is now northern Patagonia, on what was then a South American island continent split off from the supercontinent Gondwana. The fossils were found in the Huincul Formation, dating to the late Cenomanian-early Turonian age of the upper Cretaceous Period (geology), Period, around 91 mya (unit), million years ago. Discovery On 13 February 2007, Akiko Shinya, preparator of the Field Museum of Natural History, east of the Ezequiel Ramos Mexía Dam, Ezequiel Ramos Mexía Reservoir at the Rancho Violante, discovered the skeleton of a theropod new to science. In 2016, the specimen was named and described by Sebastián Apesteguía, Nathan D. Smith, Rubén Juárez Valieri and Peter J. Makovicky. The generic name is derived from the ''gualichu'', a demon of local folklore. The specific name (zoology), specific name honours Shinya as the an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australovenator
''Australovenator'' (meaning "southern hunter") is a genus of megaraptoran theropod dinosaur from Cenomanian (Late Cretaceous)-age Winton Formation (dated to 95 million years ago) of Australia. Some specimens from the Albian-aged Eumeralla Formation and the Wonthaggi Formation may belong to ''Australovenator''. It is known from partial cranial and postcranial remains, which were described in 2009 by Scott Hocknull and colleagues, although additional descriptions and analyses continue to be published. It is the most complete predatory dinosaur discovered in Australia. It has been suggested that ''Australovenator'' is a sister taxon to '' Fukuiraptor'', although some phylogenetic analyses find it to be a more derived member of the Megaraptora, possibly being part of the main Megaraptoridae family itself. History of discovery ''Australovenator'' is based on a theropod specimen ( AODF 604), affectionately nicknamed "Banjo" after Banjo Paterson, which was found intermingled ... [...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] |
Megaraptor Namunhuaiquii
''Megaraptor'' () is a genus of large 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 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 dromaeosaurs and 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 megaraptorans) is unknown, though it is generally regarded as either a neovenatorid allosauroid or a coelurosaur, possibly related to tyrannosaurs. No complete skeletons of ''Megaraptor'' are known, so its anatomy has been pieced together over the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orkoraptor
''Orkoraptor'' is a genus of medium-sized megaraptoran theropod dinosaur from the late Cretaceous Period of Argentina. It is known from incomplete fossil remains including parts of the skull, teeth, tail vertebrae, and a partial tibia. The specialized teeth resemble those of some maniraptoriform theropods, namely the deinonychosaurs and compsognathids. This and other anatomical features led the authors who described it (Novas, Ezcurra, and Lecuona) to suggest that it was a maniraptoran coelurosaur. However, subsequent studies found it to be a megaraptoran. Found in the Cerro Fortaleza Formation of Southern Patagonia, it is one of the southernmost carnivorous dinosaurs known from South America. Etymology The name ''Orkoraptor'' means "Toothed River thief", and was derived from the Aoniken "Orr-Korr", the local name for the La Leona River, located near the original fossil site. The species name honors Coleman Burke, an amateur paleontologist who supported the expedition that co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aoniraptor
''Aoniraptor'' is an extinct genus of megaraptoran theropod dinosaurs from the Late Cretaceous Huincul Formation of Argentina. The genus contains a single species, ''Aoniraptor libertatem'', known from a partial skeleton. Discovery and naming The holotype, MPCA-Pv 804/1 to 804/25, which consists of the last sacral vertebra, six proximal caudal vertebrae, four mid-caudal vertebrae, and five haemal arches, was recovered by Matias Motta from the Violante Farm, part of the Huincul Formation. It was discovered in 2010, but only formally described in 2016. ''Aoniraptor'' comes from the Tehuelche language word "Aoni", which means south, and the Latin word "raptor", meaning thief. The specific name, ''libertatem'', comes from the Latin word for freedom, as it was discovered on the bicentennial of Argentina's independence from Spain in 1810. Description ''Aoniraptor'' grew up to long. On some blogs, ''Aoniraptor'' has been informally considered as synonymous with the theropod ''Guali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bahariasaurus
''Bahariasaurus'' (meaning " Bahariya lizard") is an enigmatic genus of large theropod dinosaur. The genus contains a single species, ''Bahariasaurus ingens'', which was found in North African rock layers dating to the Cenomanian age of the Late Cretaceous. The only fossils confidently assigned to ''Bahariasaurus'' were found in the Bahariya Formation of the Bahariya Oasis in Egypt by Ernst Stromer. This material was destroyed during a World War II bombing raid, with the same raid also destroying the holotypes of ''Spinosaurus'', '' Aegyptosaurus'', and other other animals found in the Bahariya Formation. ''Bahariasaurus'' is among the largest known theropods, estimated at long and around in weight. This approaches the size of other large theropods such as ''Tyrannosaurus rex'' and the contemporaneous '' Carcharodontosaurus''. The exact phylogenetic placement of ''Bahariasaurus'' has been debated. Some research has proposed close affiinities or even synonymy of ''Bahariasau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maip
''Maip'' is a genus of large megaraptorid theropod dinosaur from the Late Cretaceous (Maastrichtian) Chorrillo Formation of Santa Cruz, Argentina. The genus contains a single species, ''M. macrothorax'', known from an incomplete, disarticulated skeleton. ''Maip'' may represent the largest megaraptorid known from South America, and possibly the world. Discovery and naming The ''Maip'' holotype specimen, MPM 21545, was discovered by Alexis Rolando on the La Anita Farm, west of El Calafate, Santa Cruz province, Argentina, in 2019. The specimen was found disarticulated but in association over an area of . The known fossil material consists of the axis, several dorsal and caudal vertebrae, cervical and dorsal ribs, gastralia, a left coracoid, fragmentary scapula, partial right pubis, and partial metatarsal. Some of these bones were described in 2019 by Novas ''et al''. The holotype specimen includes some bones previously unknown in other megaraptorids. Although fragmentary, it r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
