Souvenir Sheet: The African Spurred tTortoise (Centrochelys sulcata) (Niger 2016)
The African Spurred tTortoise (Centrochelys sulcata) (Niger 2016)
15 August (Niger ) within release Turtles (2016) goes into circulation Souvenir Sheet The African Spurred tTortoise (Centrochelys sulcata) face value 3,000 West African CFA franc
| Souvenir Sheet The African Spurred tTortoise (Centrochelys sulcata) in catalogues | |
|---|---|
| Michel: | Mi: NE BL551 |
Souvenir Sheet is square format.
Although this edition was authorized by the Niger postal administration, it was not sold in Niger, but only distributed to the novelty trade by the Nigerian philatelic agency.Also in the issue Turtles (2016):
- Souvenir Sheet - The African Spurred tTortoise (Centrochelys sulcata) face value 3,000;
- Mini Sheet - Various Turtles face value 4*750;
- Stamp - African Spurred tTortoise (Centrochelys sulcata) face value 3,000;
- Stamp - Chelodina longicollis face value 750;
- Stamp - Chelonia mydas face value 750;
- Stamp - Demochelys coriacea face value 750;
- Stamp - Trachemys scripta elegans face value 750;
Souvenir Sheet The African Spurred tTortoise (Centrochelys sulcata) it reflects the thematic directions:
Reptiles are tetrapod (four-limbed vertebrate) animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology. Because some reptiles are more closely related to birds than they are to other reptiles (e.g., crocodiles are more closely related to birds than they are to lizards), the traditional groups of "reptiles" listed above do not together constitute a monophyletic grouping (or clade). For this reason, many modern scientists prefer to consider the birds part of Reptilia as well, thereby making Reptilia a monophyletic class.
Turtles are reptiles of the order Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked turtles), which differ in the way the head retracts. There are 360 living and recently extinct species of turtles, including land-dwelling tortoises and freshwater terrapins. They are found on most continents, some islands and, in the case of sea turtles, much of the ocean. Like other amniotes (reptiles, birds, and mammals) they breathe air and do not lay eggs underwater, although many species live in or around water.
