has part has part develops from subdivision of skeletal system cartilage tissue cartilaginous neurocranium embryonic chondocranium SCTID:155540009 UBERON:0004761 chondocranium AAO:0000094 XAO:0003059 cartiligionous skeletal structure of skull FMA:76621 NCIT:C34121 The primitive cartilagionous skeletal structure of the fetal skull that grows to envelop the rapidly growing embyonic brain. In humans, the chondrocranium begins forming at 28 days from mesenchymal condensations and is fully formed between week 7 and 9 of fetal development. While the majority of the chondrocranium is succeeded by the bony skull in most higher vertebrates, some components do persist into adulthood.[1] In Cartilagious fishes and Agnathans, the chondrocranium persist throughout life.[2] Embryologically, the chondrocranium represent the basal cranial structure, and lay the base for the formation of the endocranium in higher vertebrates[WP]. cartilaginous chondocranium Wikipedia:Chondrocranium cartilaginous skull EHDAA:6031 head paraxial mesoderm