May have stumbled upon the inspiration for Incarnation of Dread

"

[T]he azhdarch was just wrong. In many ways it resembled a pterosaur, those bat-lizards of antiquity, with its leathery wings. In other ways it resembled a dragon out of fantasy with its long, spine-covered tail and hooked claws. But the neck—nearly twice as long as a man—was open from its vestigial head to the start of its thorax and lined with hooked, snarling teeth that hinged open and closed like the mandible-leaves of a fly trap.