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Reptilia

Class for Reptiles

Amniotic Eggs, Dry Skin, Thoracic breathing

All living reptiles exhibit three key features.... ( all 3 )

Amniotic Eggs

Watertight eggs laid on land

Dry Skin

Covers body and prevents water loss

Thoracic Breathing

Increases lung capacity

Amnion

Fluid filled cavity that suspends embryo and provides cushion in amniotic egg

four

the amniotic egg has #? membranes

Yolk Sac

Provides food for embryo

Allantois

Excretes wastes from embryo

Chorian

Allows Oxygen entry for embryo

Eggshell

the outer layer for the amniotic egg

Anapsids

No holes on side of skull behind eye orbit

Synapsids

One hole on side of skull behind eye orbit

Diapsids

Two holes on the side of the skull behind eye orbit

Pelycosaurs

First land vertebrates to kill beasts their own size

Archosaurs

first bipedal land vertebrate

Cretaceous

Period when dinosaurs became extinct

Internal Fertilization

sperm fertilizes eggs before protective membranes are formed

Improved circulation

oxygen provided to body more efficiently

Ectothermic

Are all living reptiles Ectothermic or Endothermic?

Chelonia

Order containing turtles and tortoises
A) Chelonia
B) Rhynchocephalia
C) Squamata
D) Crocodylia

Tortoises

Terrestrial Chelonia, dome-shaped shells

Turtles

Mostly aquatic chelonia, disc-shaped shells

Rhynchocephalia

Order containing tuataras
A) Chelonia
B) Rhynchocephalia
C) Squamata
D) Crocodylia

Squamata

Order containing lizards and snakes
A) Chelonia
B) Rhynchocephalia
C) Squamata
D) Crocodylia

Crocodylia

Order containing crocodiles and alligators
A) Chelonia
B) Rhynchocephalia
C) Squamata
D) Crocodylia

Birds

Crocodiles resemble ____ more than other living reptiles

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