The older representative, Segnosaurus, is derived from the Latin word sēgnis (meaning 'slow') and the Greek σαῦρος.įorelimbs of Therizinosaurus, specimen IGM 100/15 displayed at Nagoya City Science Museum The representative genus, Therizinosaurus, is derived from the Greek θερίζω ( therízō, meaning 'to reap'-but Maleev intended also 'scythe') and σαῦρος ( saûros, meaning 'lizard'). Various features of the forelimbs, skull and pelvis unite these finds as both theropods and maniraptorans, close relatives to birds. Therizinosaurs (once called segnosaurs) were small to giant-sized, mainly herbivorous, theropod dinosaurs that have been found across the Early to Late Cretaceous deposits in Asia and North America. Collection of five therizinosaurs, clockwise from top left: Suzhousaurus, Erliansaurus, Nothronychus, Falcarius and Jianchangosaurus.
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