Here are two cancelled U.S. postage stamps from 1989 depicting the flying reptile Pteranodon .  This stamp was part of four set with the ...

Kona Dolomite dated to over 2 billion years old. Thought to be a cyanobacteria colony (stromatolite). Found in the Kona Hills of Marqu...

Here is a cancelled dinosaur stamp I found in my collection. It was part of set of 4 dinosaur/reptile stamps the U.S. Postal Service rel...