So, I just finished my first gallery wall. I really like old science art; eventually it will cover all the walls of my office. I got the images as hires digital files, and printed them on Shutterfly.
So, from the top clockwise they are:
Giant sloth skull, life size; PM if you want me to e-mail you the digital image.
Moa skeleton: PM me if you want the image.
Poster for fake sea serpent skull made from fossil whale bones; this one came out amazing, I had to buy an odd size frame for it. PM for the file.
Madagascar ammonite
Keichosaurus fossil
Fossil wolf skull image (pm me for image)
Fossil crocodile skull from American Museum of Natural history (can't send out this one, sorry)