< Dichotomous Key
|
|
1
2
- Feeding method
- Filter - Urochordata
- Jawless, sucking mouth - Myxini
3
- No options yet
4
- Jaw
- Present - #5
- Not present - Petromyzontidae
5
- Skeletal material
- Cartilage - Chondrichthyes
- Bone - #6
6
7
8
9
10
- Fins
- Lobed - #11: Sarcopterygii
- Rayed - Actinopterygii
11: Sarcopterygii
- Ability to breathe air
- Present - Dipnoi
- Not present - Actinistia
This article is issued from Wikibooks. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.