(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 5. Examples of tongue aiming in microhylid frogs: (A) Phrynomantis
bifasciatus; (B) Dyscophus insularis; (C) Scaphiophryne
marmorata; (D) Dermatonotus muelleri; (E) Kaloula
pulchra; (F) Callulina sp.; (G) Gastrophryne olivacea;
(H) Breviceps adspersus; (I) Microhyla sp.; (J)
Probreviceps sp. Note the angle of the tongue in relation to the
midline of the head. All pictures were taken with the camera positioned at
45°, except H and J, which were head-on profiles.