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Illustration of the pelvis from the theropod dinosaur Siamotyrannus isanensis. Siamotyrannus lived in Thailand, according to scientists about 90 MYA. It has been estimated to a length of 7 meter, and a weight of about 2 tonnes. Scientists has been uncertain if Siamotyrannus is a member of the family Tyrannosauridae or to Sinraptoridae.
Taxa Siamotyrannus

Illustration of the pelvis from the theropod dinosaur Siamotyrannus isanensis. Siamotyrannus lived in Thailand, according to scientists about 90 MYA. It has been estimated to a length of 7 meter, and a weight of about 2 tonnes. Scientists has been uncertain if Siamotyrannus is a member of the family Tyrannosauridae or to Sinraptoridae.

pelvis Thailand Dinosauria Siamotyrannus +2
Uragasaurus is a sauropod dinosaur, and the first mamenchisaurid known from Thailand. Mamenchisaurids exhibit the basic sauropod body plan, processing their herbivorous diet in their large gut. Uniquely, mamenchisaurid necks, like that of Uragasaurus, are proportionately long, even by sauropod standards.

Uragasaurus is a sauropod dinosaur, and the first mamenchisaurid known from Thailand. Mamenchisaurids exhibit the basic sauropod body plan, processing their herbivorous diet in their large gut. Uniquely, mamenchisaurid necks, like that of Uragasaurus, are proportionately long, even by sauropod standards.

Thailand Dinosauria Mamenchisauridae Uragasaurus
Life reconstruction of a herd of five individuals of Uragasaurus kalasinensis inhabiting a Late Jurassic forest in Thailand, accompanied by a pair of rhamphorhynchoid pterosaurs and a metriacanthosaurid theropod. Artwork by Pakorn Chotchaiyaporn (Jæsica ẞababi).

Life reconstruction of a herd of five individuals of Uragasaurus kalasinensis inhabiting a Late Jurassic forest in Thailand, accompanied by a pair of rhamphorhynchoid pterosaurs and a metriacanthosaurid theropod. Artwork by Pakorn Chotchaiyaporn (Jæsica ẞababi).

Thailand Jurassic Late Jurassic Metriacanthosauridae +1
Locality map and section diagram of Phu Noi Locality. The map of Thailand (a); The location of Phu Noi Locality and the distribution of Phu Kradung Formation, the northeastern region with the outline of Kalasin Province (edit by Kantanat Trakulveerayut) (b); the diagrammatic section of Phu Noi (applied from Chowchuvech et al.31) (c).

Locality map and section diagram of Phu Noi Locality. The map of Thailand (a); The location of Phu Noi Locality and the distribution of Phu Kradung Formation, the northeastern region with the outline of Kalasin Province (edit by Kantanat Trakulveerayut) (b); the diagrammatic section of Phu Noi (applied from Chowchuvech et al.31) (c).

Thailand Uragasaurus formation
Illustration of the pelvis from the theropod dinosaur Siamotyrannus isanensis. Siamotyrannus lived in Thailand, according to scientists about 90 MYA. It has been estimated to a length of 7 meter, and a weight of about 2 tonnes. Scientists has been uncertain if Siamotyrannus is a member of the family Tyrannosauridae or to Sinraptoridae.

Illustration of the pelvis from the theropod dinosaur Siamotyrannus isanensis. Siamotyrannus lived in Thailand, according to scientists about 90 MYA. It has been estimated to a length of 7 meter, and a weight of about 2 tonnes. Scientists has been uncertain if Siamotyrannus is a member of the family Tyrannosauridae or to Sinraptoridae.

pelvis Thailand Dinosauria Siamotyrannus +2

News

Uragasaurus – A New Mamenchisaurid Sauropod from Thailand
bone limb vertebra Thailand fossil Dinosauria Mamenchisauridae Uragasaurus new species
A team of international researchers has named a remarkable new species of long-necked dinosaur from Thailand. Uragasaurus kalasinensis is the first formally described member of the Mamenchisauridae from Thailand. Although the fossil evidence consists of a single vertebra, the bone preserves a unique combination of anatomical features that enabled scientists to identify an entirely new
15/07/2026 everythingdinosaur
New Species of Long-Necked Dinosaur Identified in Thailand
New Species of Long-Necked Dinosaur Identified in Thailand
Thailand Dinosauria Mamenchisauridae Uragasaurus new species
Paleontologists working in northeastern Thailand have identified a new species of mamenchisaurid sauropod dinosaur, offering fresh evidence that a group of giant sauropods once thought to be almost exclusively East Asian also roamed mainland Southeast Asia. The post New Species of Long-Necked Dinosaur Identified in Thailand appeared first on Sci.News: Breaking Science News.
09/07/2026 sci-news
A New Dinosaur Discovery – The Last Titan from Thailand
Thailand fossil Dinosauria discovery new species
Researchers have announced the discovery of a new species of sauropod dinosaur.  It is the largest described to date from Southeast Asia. Furthermore, the newly described sauropod named Nagatitan chaiyaphumensis might be one of the geologically youngest of all the sauropods known from Southeast Asia. The fossil material was discovered in northeastern Thailand around ten
16/05/2026 everythingdinosaur
Scientists discover giant “last titan” dinosaur, Southeast Asia’s largest ever
Thailand Dinosauria
A massive new dinosaur discovered in Thailand is rewriting Southeast Asia’s prehistoric history. The newly named Nagatitan chaiyaphumensis was a colossal long-necked sauropod that weighed around 27 tonnes and lived more than 100 million years ago. Scientists believe it may be the last giant sauropod ever to roam the region before rising seas transformed the landscape.
15/05/2026 sciencedaily
27 mètres, 30 tonnes : le nagatitan, « dernier titan de Thaïlande », est l’un des plus grands dinosaures découvert en Asie
27 meters, 30 tonnes: the nagatitan, “the last titan of Thailand”, is one of the largest dinosaurs discovered in Asia
Thailand Dinosauria
113 million years ago, a giant roamed what is now northeastern Thailand. More than 27 meters long and weighing nearly 30 tonnes, this unique dinosaur could well be the largest ever discovered in Southeast Asia. But beyond its dimensions...
15/05/2026 futura-terre ⚙ Auto-translated
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