Fish Flashcards
1
Q
Fish are Paraphyletic, what does this mean ?
A
The grouping consists of the group’s last common ancestor and all descendants of that ancestor (Include hagfish & lungfish)
Excluding a few monophyletic subgroups.
2
Q
Give the definition of a fish
A
A non-tetrapod craniate
no limbs, primitive skulls
3
Q
List the sub-groups contained within the Fish group.
A
Myxini- Hagfish Petromyzontida- Lampreys Chondrichthyes- Shark, Ray Actinopterygill- Ray finned fish Actinistia- Coelacanths Dipnoi- Lungfishes.
