ClipArt ETC
This illustration shows the skull of a rattlesnake. ar, articular portion of lower jaw; de, dentary portion; bo, basi-occipatal; mx, maxilla, bearing poison fang; na, nasal; pl, palatine, the front end being represented by a dotted line as though seen through the maxilla; pmx, premaxilla; po, post frontal; pr, prefrontal; pt, pterygoid; qu, quadrate; sq, squamosal; tr, transverse bone.

Rattlesnake Skull

This illustration shows the skull of a rattlesnake. ar, articular portion of lower jaw; de, dentary…