A Guide to the Study of Fishes, Volume 1 (of 2)
CHAPTER XXXIV.
THE CROSSOPTERYGII.
Class Teleostomi.--Subclass Crossopterygii.--Order of Amphibians.--The Fins of Crossopterygians.--Orders of Crossopterygians.--Haplistia.--Rhipidistia.--Megalichthyidæ.--Order Actinistia.--Order Cladistia.--The Polypteridæ 598