Final answer:
Abnormal skeletal maturity seen on a bone x-ray of a child with precocious puberty is advanced bone age, where the bones appear more developed and mature than expected for their chronological age. This can result in abnormal bone formation, leading to a taller stature.
Step-by-step explanation:
Abnormal skeletal maturity seen on a bone x-ray of a child with precocious puberty is advanced bone age. This means that the child's bones appear more developed and mature than expected for their chronological age.
In severe cases, the child may have abnormal bone formation, resulting in thicker and longer bones, leading to a taller stature.
This abnormal skeletal maturity can be observed on specific bones like the mandible and the femur.