The forms considered are Amia and Lepidosteus (Holostei), and Polyodon and Scaphirhynchus (Chondrostei). The cranial nerves of these forms bear very obvious relations to the degree of development of certain external sense organs. That Amia and Lepidosteus are teleost-like in their nerve relations accords with the common view of their relationships in general; Polyodon and Scaphirhynchus on the other hand show in their cranial nerves elasmobranch relations.
Proceedings of the Iowa Academy of Science
©1922 Iowa Academy of Science, Inc.
Norris, H. W.
"Observations on the Cranial Nerves of Certain Ganoids,"
Proceedings of the Iowa Academy of Science, 29(1), 191-193.
Available at: https://scholarworks.uni.edu/pias/vol29/iss1/46