Dichotomous Key/Hexanchiformes
< Dichotomous Key| Hexanchiformes | |
|---|---|
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Class | Chondrichthyes |
| Subclass | Elasmobranchii |
| Superorder | Selachimorpha |
| Order | Hexanchiformes |
1
- Tissue on gill slits
- Protruding - Chlamydoselachus anguineus
- Not protruding - #2
2
3
- Number of pups in one litter
- 22 to 108 - Hexanchus griseus
- 13 or less - Hexanchus nakamurai
4
- Spots
- Present - Notorynchus cepedianus
- Absent - Heptranchias perlo
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