Dichotomous Key/Chondrichthyes
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< Dichotomous Key(Redirected from Dichotomous Key:Chondrichthyes)
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| Chordata keys |
| Subphyla |
| Myxini | Urochordata |
| Classes |
| Actinistia | Actinopterygii | Amphibia | Aves | Chondrichthyes | Dipnoi | Mammalia | Petromyzontida | Reptilia |
[edit] 1
- Scales
- Present - #2: Elasmobranchii
- Not present - Chimaeriformes
[edit] 2: Elasmobranchii
- Body shape
- Dorso-ventrally flattened - Rajomorphii or Squatiniformes
- Fusiform - Selachimorpha
