Therizinosauria

Therizinosaurs (^ⓘ; once called segnosaurs) are an extinct group of large herbivorous theropod dinosaurs whose fossils have been mainly discovered from Cretaceous deposits in Asia and North America. Potential fragmentary remains have also been found in Jurassic deposits of Asia and Europe. Various features of the forelimbs, skull and pelvis unite these finds as both theropods and maniraptorans, making them relatives of birds. The name of the representative genus, Therizinosaurus, is derived from the Greek θερίζω (therízō, 'to reap' or 'scythe') and σαῦρος (saûros, 'lizard'). The older representative, Segnosaurus, is derived from the Latin sēgnis ('slow') and the Greek σαῦρος.