< Dichotomous Key
| Testudines | |
|---|---|
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Class | Reptilia |
| Order | Testudines |
Information related to Testudines Wikipedia • Wikispecies • Wikicommons | |
1
- Number of vomers
- One - #2: Casichelydia
- Two - Proganochelys
2: Casichelydia
- Head retraction
- Head can not be fully placed inside shell - Chelydridae
- Head can be fully placed inside shell - #3
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