What are four radiologic features of cleidocranial dysostosis?

1. Anomalous clavicles (absent, partial, or unfused)
2. Accessory proximal epiphyses in hands and feet
3. Wormian bones (wide, serpiginous sutures in the skull)
4. Deficient midline ossification (failed closure of the fontanelles, neural arches, and symphysis pubis; delayed ossification of the mandible, sternum, and vertebra