Dichotomous Key/Selachimorpha
Appearance
Selachimorpha | |
---|---|
Kingdom | Animalia |
Phylum | Chordata |
Subphylum | Vertebrata |
Class | Chondrichthyes |
Subclass | Elasmobranchii |
Superorder | Selachimorpha |
Information related to Selachimorpha Wikipedia • Wikispecies • Wikicommons | |
1
2
- Dorsal fins
- One - Hexanchiformes
- Two - #5
3
- Body shape
- Flattened - Squatiniformes
- Fusiform - #4
4
- Snout length
- Short - Squaliformes
- Long - Pristiophoriformes
5
- Fin spines
- Present - Heterodontiformes
- Not present - #6
6
- Mouth position
- In front of eyes - Orectolobiformes
- Behind eyes - #7
7
- Nictitating membrane
- Present - Carcharhiniformes
- Not present - Lamniformes