Reptiles

• Birds are part of Lepidosauria, which holds all the reptiles. Should birds be considered reptiles?

• Taxonomy is a joke

Amphibians:

• Need water for egg development

• Non-amniotic, gelatinous eggs

• Cutaneous respiration

• Metamorphosis 

• Moist skin for breathing

• 2 - 3 chambered heart

• external fertilization
  

Reptiles:

• Scales

• Amniotic eggs

• Respiration through more developed lungs

• Partially divided ventricle

• External ear holes

• Claws

• teeth in sockets

• bodies held off the ground

• internal fertilization

• well developed lungs

Both:

• Ectotherm

• 3 chambered heart in adults

• Eggs for reproduction