-
Period: to
Amphibians to Reptiles
-
Reproducing IInternally 375 Million BC
About 375 million BC Australian scientists discovered that some amhibians reproduced interanlly using sexual reproduction this is special because amphibians commonly reproduce externally
http://www.amnation.com/vfr/archives/009763.html -
Amniotic egg 365 Million BC
About 365 Million BC the first amniotic egg was found it was discovered to have a soft membrane that was also lacking many minerals http://www.naturewatch.ca/eman/reports/publications/99_montane/herps/herps02.html -
375 Million BC amphibians with lungs!
The first amphibians found with lungs was actually a cross between amphibian and fish that existed more than 300 million years ago it was called an Eusthenopteron
http://www.michellecaldwell.com/linkfiles/scaredcricket/articles/other/evolution.html -
Order Anura 300 Million BC
The order anura begin their lives in water, but end up on land. They are characterized by their compact bodies and large heads. They have four legs that are adapted for hopping and jumping. These are the most common animals people see as amphibians
http://www.buzzle.com/articles/three-types-of-amphibians.html -
Order Caecilians 296 million BC
The order caecilians are slender bodied amphibians whats cool about these guys is that their bodies are like worms or snakes they at first glance you would think you had walked up on a snake but its really an amphibian and although they look alot alike caecilians and snakes are not as close related as you think
www.animals.about.com -
Order Urodela 250 MillionBC
The order Urodela are creatures like salamanders they are characterized by their visibe tails and live in damp place such as near a river or lake. its hard to distingush between amphibians and reptiles with this articular species butone common difference is the skin.
www.encyclopedia2.com -
Order Crocodilia (late cretaceaous period)
The order crocodilia are characterized by their jaws and their carniverous ways. animals in this order live primarily in water and feed on medium to large size game
animals.about.com -
Order sphenodontia 225 Million Bc
The order sphenodontia existed first during the mezoic period. These animals live in hot dry places they have rough scaled skin and are reptiles. -
Order squamata 160 Million BC
The order squamata is the largest order of reptiles this is the order many of your worst fears would fall under the snakes and lizards that make up this order live in moderate to tropicacl climates and in damp and dry places they have smooth scaly skin
animals.about.com -
The order Testudines 100 Million BC
The order testudines are made up of turtles and toroised these animals live in moist ares and thehave a shell for ptrotection from predators they are omnivores and are reptiles
animaldiversityweb.emmu.edu -
Hannah Elrod & Courtney Pace
our timeline (:
