Question

multiple choice question
in which group of vertebrates did jaws and a bony vertebral column arise?
amphibians
fishes
reptiles
lancelets

Explanation:

Jaws and a bony vertebral column first appeared in vertebrates within the fish group. Amphibians evolved after fish and already had these features. Reptiles are even further along in the evolutionary timeline. Lancelets are invertebrates and do not have a bony vertebral column or jaws.

Answer:

fishes