basicranial fenestra

basicranial fenestra
a large opening in the oticoccipital area below the notochord, e.g. in Sarcopterygii

Dictionary of ichthyology. 2009.

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  • otic shelf — the basioccipital is divided on either side of the basicranial fenestra to form two shelves in Sarcopterygii. The jugular vein runs along the top of these shelves toward the intracranial joint …   Dictionary of ichthyology

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