Agnatha Flashcards
To learn about agnathostomes
1
Q
What is the basal group of vertebrates?
A
Petromyzontida: Lampreys
2
Q
What is the fossil evidence for vertebrates?
A
Ostrachoderms: jawless and armored fish
3
Q
Describe craniates
A
Head, neural crest and higher metabolism
4
Q
What are the organisms that give evidence of craniates?
A
Haikouella and Myllokunmingia
5
Q
What is the fossil evidence for craniates?
A
Conodonts: Mineralized skeletal elements in mouth and pharynx
6
Q
What is the basal group of craniates?
A
Myxini: Hagfish
7
Q
What is the basal group of gnathostomes?
A
Chondrichthyes: Sharks/Cartilage fish
8
Q
What fossil evidence is there to support the evolution of jaws?
A
Placoderms: Armoured fish
9
Q
What helps sharks sense electromagnetic fields?
A
Ampullae of Lorenzini
10
Q
What helps sharks to sense low frequency vibrations?
A
Lateral line
