Genyodectes serus (Greek for “late jaw bite”) is a genus of theropod belonging to the Ceratosauridae family and lived in South America during the early Cretaceous. It is only known from an incomplete snout described by Sir Arthur Woodward in 1901. Genyodectes was the second dinosaur ever discovered in South America and despite its fragmentary nature, would remain the most complete theropod known from South America until the 1970’s.