From Worm to Wyvern

How did the classical dragon, essentially just a massive snake in form, a worm, evolve, in early Christian culture, into the very particular fantasy creature we know as a ‘dragon’ today in the West? It is argued that the dragon acquired its animalian head and more bulbous central body from another well-established creature of classical fantasy, the ancient sea-monster (kētos), this by virtue of the fact that, whilst dragon and sea-monster had remained largely distinct creatures in classical culture, they had been confounded by the Septuagint. Its wings, however, and probably too in effect its two legs (the latter placed in the position of the sea-monster’s front flippers), it derived rather from demons and the Devil, the latter being associated with snakes already in the Old Testament, and then spectacularly so in the New Testament’s Revelation. By the ninth century AD these two developments had crystallized in the wyvern-type dragon.