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Therizinosaurus (/ ˌ θ ɛ r ə ˌ z ɪ n oʊ ˈ s ɔːr ə s / ⓘ; meaning 'scythe lizard') is a genus of very large therizinosaurid dinosaurs that lived in Asia during the Late Cretaceous period in what is now the Nemegt Formation around 70 million years ago. It contains a single species, Therizinosaurus cheloniformis.
Forelimbs of Therizinosaurus, specimen IGM 100/15 displayed at Nagoya City Science Museum. Therizinosaurs were long considered an enigmatic group, whose mosaic of features resembling those of various different dinosaur groups, and scarcity of their fossils, led to controversy over their evolutionary relationships for decades after their initial discovery.
Therizinosaurs, also known as segnosaurs, were theropod dinosaurs and members of the clade Therizinosauria. For many years after their discovery, the exact placing of this group within dinosaurs was somewhat speculative.
The humerus (upper arm) was exceptionally robust and flexible with wide lower ends as seen on the humeri of the therizinosaurids Nothronychus and Therizinosaurus. Not only that but the biceps muscle was prominently well-developed in Therizinosaurus. [2] [12] In Segnosaurus, the deltopectoral crest (deltoid muscle attachment) was strongly built. [3]
Life restoration. The Paralitherizinosaurus holotype specimen, NMV-52, was discovered in September 2000 in layers of the Osoushinai Formation in Nakagawa, Hokkaido, Japan, which dates to the early Campanian age of the late Cretaceous period.
Check out Therizinosaurus. That's who the filmmakers say was the basis of the Indominous rex. Those claws are so long it looks like Edward Scissorhands. 'Theri,' as we'll call him, lived in the ...
The choice to include a presenter was made to more easily allow audiences to see the scale of the creatures shown in the episodes. Both episodes have Marven on a purposeful journey; in The Giant Claw, Marven searches for the long-clawed Therizinosaurus and in Land of Giants he searches for the enormous Argentinosaurus and Giganotosaurus.
Dinosaur evolution after the Triassic followed changes in vegetation and the location of continents. In the Late Triassic and Early Jurassic, the continents were connected as the single landmass Pangaea , and there was a worldwide dinosaur fauna mostly composed of coelophysoid carnivores and early sauropodomorph herbivores. [ 121 ]