The bones are fully ossified and the vertebrae interlock with each other by means of overlapping processes.
ðə bˈoʊnz ɑːɹ fˈʊli ˈɑːsᵻfˌaɪd ænd ðə vˈɜːɾɪbɹˌiː ˌɪntɚlˈɑːk wɪð ˈiːtʃ ˈʌðɚ baɪ mˈiːnz ʌv ˌoʊvɚlˈæpɪŋ pɹˈɑːsɛsᵻz.