Ceratocaudia

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Ceratocaudia (lit. 'horned tail') is a genus of macronarian sauropod dinosaur from the Jurassic Kaladongar Formation of Gujarat, India. The genus contains a single species, Ceratocaudia antiqua, known from a partial skeleton. The Ceratocaudia antiqua holotype specimen was collected from the low-energy estuarine sediments of the Khadir Uplift of Kaladongar Formation in Kutch district of Gujarat, India. It consists a cervical (neck) and several caudal (tail) vertebrae, an isolated chevron, and elements of the appendicular skeleton including an interclavicle, an ulna (forearm bone), metacarpals (finger bones), femora (thighbones), tibiae, fibulae (lower leg bones), and a metatarsal (toe bone). They are housed in the Indian Institute of Technology Bombay in Mumbai, India, where they are permanently accessioned under as IITBR3–IITBR59. In 2026, Abhishek Natarajan and colleagues described the remains as belonging to a new genus and species of sauropod dinosaur. The generic name, Ceratocaudia, comes from the Ancient Greek word κέρας, meaning 'horn', and the Latin word cauda, meaning 'tail', after the horn-like crest on the anterior caudal neural spine. The specific name, antiqua, is a Latin word meaning 'ancient'. The Ceratocaudia holotype is estimated to belong to an animal about 7 metres (23 ft) long, making it one of the smallest known macronarians. There is a possibility that it represents a dwarf taxon.