![Whole mount of larval lamprey.](https://s3-us-west-2.amazonaws.com/courses-images/wp-content/uploads/sites/3442/2020/01/04190451/Slide13.jpg)
Whole mount of larval lamprey. CC-BY Kristen Roosa
![a. Cross section through pharynx of larval lamprey, b. Cross section through trunk region of larval lamprey.](https://s3-us-west-2.amazonaws.com/courses-images/wp-content/uploads/sites/3442/2020/01/04190457/Slide24.jpg)
a. Cross section through pharynx of larval lamprey, b. Cross section through trunk region of larval lamprey. CC-BY Skylar Jackson.
Whole mount of larval lamprey. CC-BY Kristen Roosa
a. Cross section through pharynx of larval lamprey, b. Cross section through trunk region of larval lamprey. CC-BY Skylar Jackson.