part of develops from ends during starts during chondrocranium chondrocyte cartilage element trabecula cranii eriksegerdell XAO:0004381 Cartilaginous element comprising paired, rod-shaped cartilages, which develop in the head of the embryo. They are the primordia of the anterior part of the cranial base, and are derived from the cranial neural crest cells. tc trabeculae cranii trabecular cartilage xenopus_anatomy 2012-05-05T05:15:00Z NF stage 40 NF stage 66