In more advanced stages, procartilagenous stylohyal chondrified and fuse with the well organized quadrate.
A. I. Dakrory, A. M. Abu-Taira, E. Y. Salah EL Din, Y. B. Mohamed 2018, 'Prenatal development of the sound transmitting apparatus in different embryonic stagesof Malpolon monsspesulanus (squamata-serpentes)', Brazilian Journal of Biologyhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842018005002101&lng=en&tlng=en. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
As the growth proceeded, it chondrified and differentiates into two main parts.
A. I. Dakrory, A. M. Abu-Taira, E. Y. Salah EL Din, Y. B. Mohamed 2018, 'Prenatal development of the sound transmitting apparatus in different embryonic stagesof Malpolon monsspesulanus (squamata-serpentes)', Brazilian Journal of Biologyhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842018005002101&lng=en&tlng=en. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)