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Sinotyrannus
''Sinotyrannus'' (meaning "Chinese tyrant") is a genus of large basal tyrannosauroid dinosaur, known from a single incomplete fossil specimen including a partial skull, from the Early Cretaceous Jiufotang Formation of Liaoning, China. Specifically, it is a member of the Proceratosauridae, a family that originated in the Jurassic whose members are known from Europe and Asia. Though it is not much younger than primitive tyrannosauroids such as ''Dilong'', it is similar in size to later forms such as ''Tyrannosaurus''. It was much larger than contemporary tyrannosauroids, reaching a total estimated length of , and was the largest known theropod from the Jiufotang Formation. The type species is ''S. kazuoensis'', described by Ji ''et al.'', in 2009. Description ''Sinotyrannus'' was a large tyrannosaur, measuring long and weighing . It was among the largest basal tyrannosauroids known, repudiating the previously presumed trend that tyrannosauroids gradually increased in size thro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinotyrannus Scale To Human
''Sinotyrannus'' (meaning "Chinese tyrant") is a genus of large basal tyrannosauroid dinosaur, known from a single incomplete fossil specimen including a partial skull, from the Early Cretaceous Jiufotang Formation of Liaoning, China. Specifically, it is a member of the Proceratosauridae, a family that originated in the Jurassic whose members are known from Europe and Asia. Though it is not much younger than primitive tyrannosauroids such as ''Dilong'', it is similar in size to later forms such as ''Tyrannosaurus''. It was much larger than contemporary tyrannosauroids, reaching a total estimated length of , and was the largest known theropod from the Jiufotang Formation. The type species is ''S. kazuoensis'', described by Ji ''et al.'', in 2009. Description ''Sinotyrannus'' was a large tyrannosaur, measuring long and weighing . It was among the largest basal tyrannosauroids known, repudiating the previously presumed trend that tyrannosauroids gradually increased in size t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proceratosauridae
Proceratosauridae is a Family (biology), family or clade of Tyrannosauroidea, tyrannosauroid theropod dinosaurs from the Middle Jurassic to the Early Cretaceous. Distinguishing features Unlike the advanced Tyrannosauridae, tyrannosaurids but similar to primitive Tyrannosauroidea, tyrannosauroids like ''Dilong (dinosaur), Dilong'', proceratosaurids were generally small (with the exception of the possible proceratosaurids ''Yutyrannus'' and ''Sinotyrannus'') and had fairly long, three-fingered arms capable of grasping prey. In comparison to other members of Tyrannosauroidea, proceratosaurids can be distinguished by the following features according to phylogenetic analyses by Averianov ''et al''. (2010) and Loewen ''et al''. (2013) : * A sagittal cranial crest formed by the Nasal bone, nasals starting at the junction of the premaxilla and nasals. * Extremely elongated external nares, with posterior margins posterior to the anterior margin of the antorbital fossa and maxillary fenes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tyrannosauroidea
Tyrannosauroidea (meaning 'tyrant lizard forms') is a superfamily (or clade) of coelurosaurian theropod dinosaurs that includes the family Tyrannosauridae as well as more basal relatives. Tyrannosauroids lived on the Laurasian supercontinent beginning in the Jurassic Period. By the end of the Cretaceous Period, tyrannosauroids were the dominant large predators in the Northern Hemisphere, culminating in the gigantic ''Tyrannosaurus''. Fossils of tyrannosauroids have been recovered on what are now the continents of North America, Europe and Asia, with fragmentary remains possibly attributable to tyrannosaurs also known from South America and Australia. Tyrannosauroids were bipedal carnivores, as were most theropods, and were characterized by numerous synapomorphy, skeletal features, especially of the skull and pelvis. Early in their existence, tyrannosauroids were small predators with long, three-fingered forelimbs. Late Cretaceous genera became much larger, including some of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tyrannosauroid
Tyrannosauroidea (meaning 'tyrant lizard forms') is a superfamily (or clade) of coelurosaurian theropod dinosaurs that includes the family Tyrannosauridae as well as more basal relatives. Tyrannosauroids lived on the Laurasian supercontinent beginning in the Jurassic Period. By the end of the Cretaceous Period, tyrannosauroids were the dominant large predators in the Northern Hemisphere, culminating in the gigantic ''Tyrannosaurus''. Fossils of tyrannosauroids have been recovered on what are now the continents of North America, Europe and Asia, with fragmentary remains possibly attributable to tyrannosaurs also known from South America and Australia. Tyrannosauroids were bipedal carnivores, as were most theropods, and were characterized by numerous skeletal features, especially of the skull and pelvis. Early in their existence, tyrannosauroids were small predators with long, three-fingered forelimbs. Late Cretaceous genera became much larger, including some of the largest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jiufotang Formation
The Jiufotang Formation (Chinese: 九佛堂组, pinyin: ''jiǔfótáng zǔ'') is an Early Cretaceous geological formation in Chaoyang, Liaoning which has yielded fossils of feathered dinosaurs, primitive birds, pterosaurs, and other organisms (see Jehol Biota). It is a member of the Jehol group. The exact age of the Jiufotang has been debated for years, with estimates ranging from the Late Jurassic to the Early Cretaceous. New uranium-lead dates reveal the formation is deposited in the Aptian stage of the Early Cretaceous. Fossils of ''Microraptor'' and ''Jeholornis'' are from the Jiufotang. Fossil content Choristoderans Fish Mammaliamorphs Several mammaliamorph specimens have been found from the Jiufotang, but only two have been formally described and named. Ornithischians Pterosaurs Saurischians A large titanosaur is present in the formation. Enantiornithines Euornithines Misc theropods See also * Yixian Formation * List of dinosaur-bearing rock for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guanlong
''Guanlong'' (冠龍) is a genus of extinct proceratosaurid tyrannosauroid from the Late Jurassic of China. The taxon was first described in 2006 by Xu Xing ''et al.'', who found it to represent a new taxon related to ''Tyrannosaurus''. The name is derived from Chinese, translating as "crown dragon". Two individuals are currently known, a partially complete adult and a nearly complete juvenile. These specimens come from the Oxfordian stage of the Chinese Shishugou Formation. Discovery ''Guanlong'' was discovered in the Dzungaria area of China by a joint expedition by scientists from the Institute of Vertebrate Paleontology and Paleoanthropology and George Washington University, and named by Xu Xing and others in 2006. ''Guanlong'' comes from the Chinese words for "crown", 冠, and "dragon", 龍, referring to the crest. The specific epithet (五彩), ''wucaii'' (Hanyu Pinyin: wǔcǎi), means "multicoloured" and refers to the colours of rock of the Wucaiwan (五彩灣, "5-col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jiufotang Fauna
The Jiufotang Formation (Chinese: 九佛堂组, pinyin: ''jiǔfótáng zǔ'') is an Early Cretaceous geological formation in Chaoyang, Liaoning which has yielded fossils of feathered dinosaurs, primitive birds, pterosaurs, and other organisms (see Jehol Biota). It is a member of the Jehol group. The exact age of the Jiufotang has been debated for years, with estimates ranging from the Late Jurassic to the Early Cretaceous. New uranium-lead dates reveal the formation is deposited in the Aptian stage of the Early Cretaceous. Fossils of ''Microraptor'' and ''Jeholornis'' are from the Jiufotang. Fossil content Choristoderans Fish Mammaliamorphs Several mammaliamorph specimens have been found from the Jiufotang, but only two have been formally described and named. Ornithischians Pterosaurs Saurischians A large titanosaur is present in the formation. Enantiornithines Euornithines Misc theropods See also * Yixian Formation * List of dinosaur-bearing rock fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stokesosaurus
''Stokesosaurus'' (meaning "Stokes' lizard") is a genus of small (around in length), carnivorous early tyrannosauroid theropod dinosaurs from the late Jurassic period of Utah, United States. History From 1960 onwards Utah geologist William Lee Stokes and his assistant James Henry Madsen excavated thousands of disarticulated ''Allosaurus'' bones at the Cleveland-Lloyd Dinosaur Quarry in Emery County, Utah. During the early 1970s, Madsen began to catalogue these finds in detail, discovering that some remains represented species new to science. In 1974 Madsen named and described the type species ''Stokesosaurus clevelandi''. Its generic name honours Stokes. The specific name refers to the town of Cleveland, Utah. The holotype ( UMNH 2938, also known as UMNH VP 7473 and formerly known as UUVP 2938) was uncovered in the Brushy Basin Member of the Morrison Formation dating from the early Tithonian stage, about 150 million years old. It consists of a left ilium or hip bone, bel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yutyrannus
''Yutyrannus'' (meaning "feathered tyrant") is a genus of proceratosaurid tyrannosauroid dinosaur which contains a single known species, ''Yutyrannus huali''. This species lived during the early Cretaceous period in what is now northeastern China. Three fossils of ''Yutyrannus huali'' —all found in the rock beds of Liaoning Province— are currently the largest-known carnivorous dinosaur specimens that preserve direct evidence of feathers. Discovery and naming ''Yutyrannus huali'' was named and scientifically described in 2012 by Xu Xing ''et al.'' The name is derived from Mandarin Chinese ''yǔ'' (羽, "feather") and Latinised Greek ''tyrannos'' (τύραννος, "tyrant"), a reference to its classification as a feathered member of the Tyrannosauroidea. The specific name consists of the Mandarin ''huáli'' (华丽 simplified, 華麗 traditional, "beautiful"), in reference to the perceived beauty of the plumage. ''Yutyrannus'' is known from three nearly complete fossil s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Tyrannosaur Research
This timeline of tyrannosaur research is a chronological listing of events in the history of paleontology focused on the tyrannosaurs, a group of predatory Theropoda, theropod dinosaurs that began as small, long-armed bird-like creatures with elaborate cranial ornamentation but achieved apex predator status during the Late Cretaceous as their arms shrank and Dinosaur size, body size expanded. Although formally trained scientists did not begin to study tyrannosaur fossils until the :19th century in paleontology, mid-19th century, these remains may have been discovered by Native Americans in the United States, Native Americans and interpreted through a mythological lens. The Montana Crow people, Crow tradition about Thunderbird (mythology), thunder birds with two claws on their feet may have been inspired by isolated tyrannosaurid forelimbs found locally. Other legends possibly inspired by tyrannosaur remains include Cheyenne people, Cheyenne stories about a mythical creature called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juratyrant
''Juratyrant'' (meaning "Jurassic tyrant") is a tyrannosauroid dinosaur genus from the late Jurassic period (early Tithonian age) of England. The genus contains a single species, ''Juratyrant langhami'', which was once classed as a species of ''Stokesosaurus''. Discovery The species is known from a single specimen consisting of an "associated partial skeleton represented by a complete pelvis" as well as a partially complete leg and neck, back and tail vertebrae. This skeleton was discovered in 1984 in Dorset. The specimen was mentioned in several papers, but was not formally described until 2008. The species was named in honor of commercial fossil collector Peter Langham, who uncovered the specimen. The specimen was discovered in strata of the Kimmeridge Clay dating from the Tithonian, the final stage of the Late Jurassic, and belonging to the ''Pectinatites pectinatus'' ammonite zone, indicating the fossil is between 149.3 and 149 million years old. Description Paul (2010) l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
