Dichotomous Key/Reptilia

Dichotomous Key: Reptilia Kingdom: Animalia Phylum: Animalia Subphylum: Chordata Class: Reptilia Information related to Reptilia Wikipedia Wikispecies Wikicommons

Parent key: Chordata Subphyla Vertebrata Key: Reptilia Vertebrata Clerck, 1757

1

• Upper and a lower lateral temporal fenestra
  • Both present - #3
  • Not present - #2

2

• Ribs adapted into hard shells
  • Present - Testudines
  • Not present - Tuatara

3

• Cloacal opening
  • Longitudinal slit Crocodylia
  • Transverse slit - #4

4

• Jaw disarticulation
  • Present - Serpentes
  • Not present - Sauria