Stamp: Mesosaurus (Guinea-Bissau 1989)
Mesosaurus (Guinea-Bissau 1989)
15 September (Guinea-Bissau ) within release Prehistoric Wildlife goes into circulation Stamp Mesosaurus face value 200 Guinea-Bissau peso
| Stamp Mesosaurus in catalogues | |
|---|---|
| Michel: | Mi:GW 1083 |
| Stamp Number: | Sn:GW 791 |
Stamp is square format.
Prehistoric WildlifeAlso in the issue Prehistoric Wildlife:
- Stamp - Edaphosaurus face value 100;
- Stamp - Irish Elk (Cervus megaceros) face value 1000;
- Stamp - Trachodon face value 50;
- Stamp - Mesosaurus face value 200;
- Stamp - Woolly Mammoth (Mammuthus primigenius) face value 350;
- Stamp - Tyrannosaurus face value 500;
- Stamp - Stegosaurus face value 800;
Stamp Mesosaurus it reflects the thematic directions:
Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya and their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record shows that birds are feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event approximately 66 mya. Dinosaurs can therefore be divided into avian dinosaurs—birds—and the extinct non-avian dinosaurs, which are all dinosaurs other than birds.
