Evolution Definitions & Whale Evolution Flashcards
A _______ is a marine mammal such as a dolphin or whale
cetacean
A _______ is a relative from a long period of time ago.
ancestor
To ______ means to get used to something
adapt
_______ are layers of rock.
Sediments
________ is a division of whale which includes the baleen whale.
Mysticetes
a _________ is a toothed whale.
Odontecetes
What is the first evolved state of a whale?
Pacicetus
When did the Pakicetus live?
50 million years ago
Where did the Pakicetus live?
Pakistan
True or False • the Pakicetus was a carnivore.
True
What was the size of a Pakicetus’ skull?
a coyote
The Pakicetus evolved into what creature?
The Ambulocetus natans
True or False • Ambulocetus natans’ had special fat packs in their nose.
False
They had fat packs, but they were located in their ears.
Where did the Ambulocetus natans live?
Pakistan
When did the Ambulocetus natans live?
49 million years ago
What was the third evolutionary step in whales?
Rhodocetus
True or False • The Rhodocetus was slow-moving.
False
They were very agile.
Where did the Rhodocetus stay full-time?
The ocean
When did the Rhodocetus live?
46 million years ago
Where did the Rhodocetus live?
Pakistan
True or False • The Basilocetus was the first whale to live in Egypt.
True
What type of carcass was found in the Basilocetus?
Shark carcasses
Did the Basilocetus have better or worse eyesight?
Better
When did the Basilocetus live?
39 million years ago
