411 REFERENCE · Wikibooks
Dichotomous Key/Reptilia
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Reptilia Animalia Animalia Chordata Chordata Vertebrata Vertebrata Reptilia Reptilia
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/