Dinosaurs-on-Stamps . info

What is a Dinosaur?

Lets start with some published definitions.

So far, the only real problem that we have is the beginning of the Triassic Age (252 or 245 million years ago). Considering that the earth is 4.5 billion years old, this discrepancy is less than half of one percent. Minor, but I would use the ICS reference.

According to these definitions:

I know these definitions may be simplistic, but to maintain a thematic collection of 'Dinosaurs on Stamps', I have had to define exactly what is a dinosaur. It presently includes over two-hundred countries, hundreds of stamp issues and over two-hundred sixty genera represented.
Maintained by Robert Margulski; E-Mail your comments to: RLM07@Margulski.name