| Type | MGI:General | Description | at E14.5, cartilage giving rise to the cranial floor (basioccipital, basisphenoid, and sphenoid) and frontonasal prominence are present, but show severe patterning defects at E14.5, cartilage from the exoccipital and ventral temporal bone primordia extending to the distal nasal capsule appear condensed and fused at E16.5, the dysmorphic cranial cartilage structure remains unossified |
