Vertebrates - Gnathostomes / Chondrichthyes Flashcards
1
Q
what traits are found in the clade gnathostoma?
A
-vertebrates with jaws, evolved from skeletal support for pharyngeal slits
-paired appendages, mineralized skeleton & enhanced sensory systems
2
Q
what are the three lineages of jawed vertebrates alive today?
A
- chondrichthytes [cartilaginous fish]
- actinopterygii [ray-finned fish]
- sarcopterygii [lobe-finned fish]
3
Q
what animals and traits are found in the class chondrichthytes?
A
-sharks, rays, skates
-cartilaginous skeleton, internal fertilization, must keep swimming to breathe
