Vertebrates - Osteichthyans

Question 1

what are the characteristics of the superclass osteichthyans?

Answer 1

-largest # of species
-bony skeleton
-includes tetrapods

Question 2

what are the characteristics of the class actinopterygii?

Answer 2

-ray finned fishes with fins supported by long, flexible rays used for movement & defense
-have a swim bladder to control buoyancy
-lateral line system

Question 3

what are the characteristics of the class sarcopterygii?

Answer 3

-4 stubby, muscular fins used to “walk” on ocean substrate
-includes coelacanths, tetrapods, lungfishes
-lungfishes can survive on land when water dries up