Presentation is loading. Please wait.

Presentation is loading. Please wait.

Class: Reptilia.

Similar presentations

Presentation on theme: "Class: Reptilia."— Presentation transcript:

1 Class: Reptilia

2 What is a Reptile? A cold-blooded vertebrate of a class that includes snakes, lizards, crocodiles, turtles, and tortoises. They are distinguished by having a dry scaly skin, and typically laying soft-shelled eggs on land

3 Testudines – Turtles and Tortoises
Hard Shell (usually) Carapace and plastron Oviparous Internal fertilization Often times lacking teeth

4 Alligator Snapping Turtle
Macrochelys temminckii

5 River Cooter Hieroglyphic River Cooter Pseudemys concinna

6 Red Eared Slider Red Eared Slider Trachemys scripta

7 Squamata – Snakes and Lizards
Largest order of reptiles (more than species) Loosely hinged jaw Skin is shed May be limbless Found all over the world!

8 Snakes Snakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears Paired organs are usually found one in front of the other One functional lung

9 Snakes Smell the air with their forked tongue
Lack chewing teeth and must swallow prey whole May or may not be venomous How can we tell?!

10 Snakes and Venom (INDIANA)
4 nostrils (2 are pits) “Fat” broad bodied Broad “spade shaped” heads (triangle) Slited pupils 2 nostrils Head is about the same width as the body Round pupils Venomous Non-Venomous

11 Eastern Hognosed Snake
Heterodon platirhinos

12 Cotton Mouth Water Moccasin Agkistrodon piscivorous

13 Queen Snake Queen Snake Regina septemvittata

14 Lizards Lizards typically have feet and external ears, while snakes lack both of these characteristics. However, because they are defined negatively as excluding snakes, lizards have no unique distinguishing characteristic as a group.

15 Lizards Can have well developed color vision
Use a combination of body colorations, body positions and pheromones to communicate.

16 Eastern Fence Lizard Eastern fence lizard Sceloporus undulatus

17 5 Lined Skink Five lined skink Eumeces fasciatus

18 Crocodilia Alligators, Crocodiles, Gharials, and Caiman
Closest relation to birds “Belly walk” or more upright run for a period of time

19 Alligator Vs Crocodile

20 Alligator vs. Crocodile
Rounded U-shaped snout Hidden teeth; except upper jaw teeth Pointy V-shaped snout Visible teeth that interlock Alligator Crocodile

Download ppt "Class: Reptilia."

Similar presentations

Ads by Google