Wiki: "A dragon, a reptile with black membranous wings, a cock's crest, and gaping jaws that bristled with tiny sawlike teeth. Handsome, isn't he? My own composition. I used a salamander, a bat, snake's scales....A subterranean dragon. I was inspired by this ... It's the
Mundus Subterraneus
of Athanasius Kircher, first edition, 1665."