These genuine antique prints of dinosaurs and prehistoric animals are by Heinrich Harder.
Heinrich Harder (1858-1935) was an artist and art professor at Berlin University. His favourite subject matter was nature. He remains well known as his murals of extinct animals and Iguanodon sculpture are at Berlin Zoo.
In the early 1900s, Heinrich illustrated collectable cards about dinosaurs and prehistoric animals. He designed the collecting cards for The Reichardt Coca Company. The company issued them as a set called "Tiere der Urwelt". This means "animals of the prehistoric world." They're some of the oldest and best visions of dinosaurs and prehistoric animals. They are still considered reference material.
Here are some of the collectable cards for you to choose from. They are original antiques, made in the early 1900s.