Reptiles

The synapomorphy of reptiles, birds, and mammals

• scales

• feathers

• amniotic egg

• endothermy

Testudines

• crocodiles and alligators

• birds

• all reptiles

• turtles

Order Sphenodontida

• frogs

• tuatara

• snakes and lizards

• cameleons

The two remaining species of tuatara live

• in Australia

• in Asia

• on the Kimodo Islands

• on islands off of New Zealand

Because reptiles are ectothermic, they cannot live in ___.

• Antarctica

• America

• Australia

• Asia

Skull with one opening in the temporal lobe.

• Anapsid

• Synapsid

• Diapsid

• Condyle

The only reptile that evolved from an ancestor with an Anapsid skull.

• Order Crocodylia

• Order Testudines

• Order Sphenodontida

• Order Squamata

Therapsids had synapsid skulls and gave rise to

• reptiles

• birds

• mammals

• amphibians

Ventral turtle shell

• plastron

• carapce

• condyle

• keratin

nipper

• one upper and two lower teeth

• two upper and one lower teeth

• found in order Testudines

• allow crocodiles to breathe while swallowing