Vertebrates Flashcards
1
Q
What makes an animal a Chordate?
A
Dorsal
Notochord
Postanal tail
Pharyngeal slits
2
Q
What are defining features of vertebrates?
A
Vertebral column
Cranium
Spinal cord
Neural crest
3
Q
When did most animal phylum appear?
A
500 mya
4
Q
What were the first vertebrates?
A
Fish like animals
5
Q
How many groups of vertebrates are there?
A
7
