Pterosaur (Pterodactylus) illustrated by Charles Dessalines D' Orbigny (1806-1876). Digitally enhanced from our own 1892…
https://www.rawpixel.com/image/325073/free-illustration-image-skeletons-dictionnaire-universel-dhistoire-naturelle-bonesFree Image from public domain license
Skull hand drawn clipart, death illustration vector. Free public domain CC0 image.