,
Aberystwyth: this example has a second head at the end of its tail. in Cheshire, England, c. 1380 The concept of
winged snakes as mythological creatures appears across numerous ancient Mediterranean and Near Eastern cultures, representing a widespread archetypal form that would later influence the development of the wyvern in European tradition. The Egyptian goddess
Wadjet, depicted as a winged
cobra or
uraeus, exemplifies this tradition and served as a protective deity of Lower Egypt from the
Predynastic period onwards. Similar winged serpentine creatures appear in Mesopotamian iconography, particularly in Neo-Assyrian palace reliefs from the 9th-7th centuries BCE, where they function as apotropaic guardians. The earliest Greek literary reference to creatures explicitly described as "winged serpents" and "winged dragons" (πτερωτῶν ὀφίων and πτηνοὶ δράκοντες) appears in
Herodotus'
Histories where they come from Arabia to Egypt in spring but are stopped and killed by ibises (sacred Egyptian birds) waiting for them at the pass. Similarly,
Euripides' Medea (431 BCE), where they are identified as the chariot steeds of
Helios that transport
Medea from
Corinth. This motif was subsequently adopted by Roman authors, with
Ovid's
Metamorphoses (8 CE) providing an expanded description of these serpentine creatures possessing both wings and fiery breath. The conflation of serpentine and draconic features in classical literature established a precedent for the morphological ambiguity that would characterize medieval depictions of such creatures. In medieval British heraldry, the earliest documented use of "wyver" appears in ''The Great, Parliamentary, or Banneret's Roll
of 1312. The term derives from the Anglo-Norman wivre
and Old French guivre'' "poisonous snake", both ultimately descended from the Latin (
viper), indicating the creature's fundamentally serpentine nature. Throughout the 14th and 15th centuries, heraldic texts demonstrate considerable terminological fluidity, with "dragon," "wyrm," and "wyver" often used interchangeably for two-legged winged serpents. The taxonomic distinction between four-legged dragons and two-legged wyverns emerged gradually during the late medieval period, becoming codified in English heraldry during the 16th century. This distinction was further elaborated in subsequent heraldic manuals, including
Gerard Legh's
The Accedens of Armory (1562) and
John Guillim's influential
Display of Heraldrie (1610), which established the iconographic conventions that would persist in British heraldry. == Distinction from other dragons ==