The Theory of

Whale Evolution

Grade 4 Unit 4 Lesson 1

Topics:Artiodactyls and Hippos

Whale AncestorsAdaptations

Hippopotamus

Nearest Living Relative to Whales

Let’s Look at Ancient Ancestors

Sinonyx

Indohyus

Ambulocetus

Rodhocetus

Basilosaurus

Dorudon

AdaptationsFrom Sinonyx to Humpback Whale

AdaptationsStreamlined Body

AdaptationsForelimbs Modified Into Flippers

AdaptationsTail Broadened Horizontally

AdaptationsHind Limbs Disappeared Completely

AdaptationsBlubber Instead of Hair

AdaptationsNostrils on Top of Head

AdaptationsHighly Developed Hearing

The End