At an estimated length of 1.22 metres (4.0 ft) to 2.22 metres (7.3 ft), Cerrejonisuchus was small for a dyrosaur. This size estimate is based on the dorsal skull lengths of specimens UF/IGM 29 and UF/IGM 31. Cerrejonisuchus has the shortest body length of any known dyrosaur, much smaller than that of the longest dyrosaur, Phosphatosaurus gavialoides, which was 7.22 metres (23.7 ft) to 8.05 metres (26.4 ft) in length.[1]