Osteichthyes

• Member of the [[Gnathostomata]] in the [[Vertebrata]]
• True bone
• Had swim bladders
  • [[Fresh water]] has a lower buoyant density than [[sea water]]
  • Needed some way to offset the weight of the bone structures

Taxonomy

• [[Osteichthyes]]
  • [[Actinopterygii]]
  • [[Sarcopterygii]]
    • [[Tetrapodomorpha]]