Reptiles

Traditionally, reptiles are members of the class Reptilia comprising the amniotes that are neither birds nor mammals.[1] (The amniotes are the vertebrates with eggs featuring an amnion, a double membrane that permits the embryo to breathe effectively on land.) Living reptiles, in that sense, can be distinguished from other tetrapods in that they are cold-blooded and bear scutes or scales.

Reptiles originated around 320-310 million years ago during the Carboniferous period, having evolved from advanced reptile-like amphibians that became increasingly adapted to life on dry land. There are many extinct groups, including dinosaurs, pterosaurs, and aquatic groups such as the ichthyosaurs. Modern reptiles inhabit every continent with the exception of Antarctica. Several living sub-groups are recognized:

 

888

 

4357_4

 

291439-alexfas01

 

309572-frederika

 

a6423715c4c948133456850a3863913b

 

cobra animals wildlife snakes reptiles 1350x1154 wallpaper_www.wall321.com_1

 

giant_tortoise

 

images

 

p

 

KONICA MINOLTA DIGITAL CAMERA

 

reptiles

 

 

Reptiles_wallpapers_2

 

Reptiles_wallpapers_28

 

www.richard-seaman.com

 

 

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s