Note 23 — Chapter V
Reading edition
The following classification of the Cyclostomata is employed in the present chapter: I. Hyperoartia ex. Petromyzon. II. Hyperotreta ex. Myxine, Bdellostoma.
Reading edition
The following classification of the Cyclostomata is employed in the present chapter: I. Hyperoartia ex. Petromyzon. II. Hyperotreta ex. Myxine, Bdellostoma.