Cladograms Sorting by Parts

Lamprey  A parasite of fish and other marine animals  Not a true vertebrate but does have a Notochord

Tuna  A bony fish with vertebra and paired appendages

Bullfrog  Bullfrogs have a strong pair of back legs and smaller front legs.

Snapping Turtle  Turtles eggs have amniotic sacs, unlike the eggs of fish or frogs

Kangaroo  Kangaroos are mammals. They feed their young milk from mammary glands located in their pouch.  Pouched animals are called marsupials.

Rhesus Monkey  Rhesus Monkeys are placental animals. Their young are born fully developed, unlike marsupials.  They are also Primates.

Humans  Humans are Primates but are different than monkeys and apes because they have short teeth and a forward foramen magnum