Flying Dragon, [516]

Flying Frog, Rhacophorus, [245] f., [246]

Foot, tridactyle, in Hallopus, [423];

bird-like in Compsognathus, [423]

Fore-limb, of Urodela, [15];

of Anura, [26];

of Proreptilia, [286];

of Microsauri, [289];

of Prosauri, [290], [298];

of Theromorpha, [302];