the cartilaginous skeleton enclosing the brain, olfactory region, eye and inner ear. Part of skull first formed in the embryo. Forms the whole skull in Cyclostomata, Elasmobranchii and Holocephali. Covered by dermal bones in Teleostomi and replaced by the osteocranium with only remnants between bones allowing for growth. Sometimes called the neurocranium or endocranium

Dictionary of ichthyology. 2009.

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  • chondrocrania — n. part of the skull of an embryo comprising cartilage that later hardens into bones of the base of the skull …   English contemporary dictionary

  • chondrocranium — /kon droh kray nee euhm/ n., pl. chondrocraniums, chondrocrania / nee euh/. a braincase composed of cartilage rather than bone, as the skull of sharks and of the vertebrate embryo before ossification. [1870 75; CHONDRO + CRANIUM] * * * …   Universalium

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