Tarzan vs. the Hyaenadons

A couple of scans from the Tarzan comic book I mentioned last week. Borrowing an idea from Arthur Conan Doyle, creator Russ Manning has his protagonists on a plateau that time forgot, populated by prehistoric mammals: giant warthogs, a saber-toothed cat, a megatherium. The hyaenadons, as conceived by Manning, look and behave a lot like modern spotted hyenas. Hyaenodons were real, though they are now classed as creodonts, primitive carnivores not closely related to hyenas.