The illustrations are a mix of Greco-Roman mythical monsters (chimeras such as Cerberus and Hydra), Phoenician gods (Astarte/Astaroth) biblical devils (Beelzebub, Satan), while some look as though they were inspired by witnessing the slaughter of men and beasts on European battlefields.
The claim that the book originated in 1075 has been dismissed, and the whole volume has been scanned on Hi-Res and can be viewed in detail at the Wellcome Library.
