Reptile classification

Class Reptile-

 1. They are cold blooded animal, vertebrates,

 2. Posses thick, impermeable skin covered by scales.

 3. Usually a three chambered heart (except for crocodilians, whose heart has four   chambers)

 4. Eggs covered with wate rtight shells.

Order- Testudines

1.     They are distinguished by their large shells,

2.     shell consist of an outer carapace and a breast covering plastron

3.     They live throughout the world, in the occasion, in fresh water, and land.

4.     some are believed to live for more than 150 years.

5.     Only distintly ralated to other living reptiles.

   Ex-Turtles

Order- Rhychocephala

1.      Only two species are remain of this ancient line of lizard like reptiles

2.      which remain certain part of New-zealand

   Ex- Tuataras

Order-Squamata

1.     Three groups of reptiles evolved comparatively recently(Jurassic period)

2.      Today they share certain similarites and are all put in the same order.

Ex- Snakes, lizard

Order- Crocodilla

1.     It includes the largest and fiercest of the living reptiles.

2.     Living in the tropical and sub tropical saltwater and freshwater throughout the world.

3.     Crocodilians are simply characterized by their crocodile –like appearances.

4.     Ex- crocodilla.

References-

Pough et al. (1998). Herpetology (See also 2nd ed., 2000.)

Courtesy by Foisal Imran.