The type specimen was an individual about 18 feet (5.5 m) long; it is not clear whether this animal was fully grown.[5][6] David B. Norman (1985) estimated that the maximum length of Ceratosaurus was 20 ft (6.1 m),[7] an assessment supported by a particularly large Ceratosaurus specimen from the Cleveland-Lloyd Quarry (UMNH 5728), discovered in the mid-1960s, which may have been 22 ft (6.7 m) long assuming similar proportions to the holotype.[8]