 Of the ten teeth of the lower jaw, the first two are rather straight with an oval cross-section and lack denticles.The third tooth has denticles at its base and a flatter top; the other seven are more recurved and flattened along their entire height; gradually the denticles reach the apex.The vertebral column of "Scipionyx" probably includes ten cervical vertebrae and thirteen dorsal vertebrae; due to the fact the specimen is just a hatchling, the differentiation between the two categories has not fully developed, making any distinction rather arbitrary.