Saurichnites salamandroides, [83]

Sauropoda, [418]

Sauropsida, [5], [277]

Sauropterygia, [476]

Saurosternum, [291]

Scales of Apoda, [87]

Scaling, aberrant, [495]

Scaphiophryne, [225], [226], [227]

Scaphiopus, [161], [164];

S. solitarius, [165]