Upper Surface of Frog Skull Small 320×291 Medium 640×582 Large 1024×931 Download Tiff Original 2400×2181 | (587.2 KB) Description "Skull of frog. Upper surface-- Pmx., premaxilla; N., nasal; M., maxilla; Sq., squamosal; Q.j., quadrato-jugal; e.o., ex-occipitals; P.f., parieto-frontals; Sph.E., sphenethmoid; P.O., pro-otic." -Thomson, 1916 Keywords amphibian skull bones, frog skull, label frog head parts, upper surface of frog skull Galleries Amphibian Anatomy, Comparative Anatomy Source: J. Arthur Thomson, M.A., LL.D. Outlines of Zoology (New York, NY: D. Appleton & Company, 1916)
