In Agnatha, the caudal fin extends anteriorly. In Cephalospidomorphi, there are one or two median fins as well.
En Agnatha, la aleta caudal se extiende hacia adelante. En Cephalospidomorphi, hay una o dos aletas mediales.
| Front | Fins in Agnatha |
|---|---|
| Back | In both groups, the Caudal fin extends anteriorly In Cephalospidomorphi, there are 1 or 2 median fins as well. |
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