The origin, the fate and the homology of the parapolar cartilage of Streptopelia senegalensis aegyptiaca (latham) order columbiformes

The parapolar cartilage is identified as a cartilaginous nodule with no actual fusion with the related elements such as the trabeculo-polar complexes and the basipterygoid process. It is in close proximity to the ventro–lateral border of the hind region of the trabeculo-polar complexes and on both sides over the basipterygoid process. The parapolar cartilage becomes ossified and incorporates in the 64 mm nestling stage within the basisphenoid.