intracranial joint

intracranial joint
the joint between two divisions of the Crossopterygian braincase. It may help in the consumption of large prey by suction in coelacanths

Dictionary of ichthyology. 2009.

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  • Cranial kinesis — is the term for significant movement of skull bones relative to each other in addition to movement at the joint between the upper and lower jaw. It is usually taken to mean relative movement between the upper jaw and the braincase[1]. Most… …   Wikipedia

  • crossopterygian — /kro sop teuh rij ee euhn/, n. 1. any fish of the group Crossopterygii, extinct except for the coelacanth, regarded as being ancestral to amphibians and other land vertebrates. adj. 2. pertaining to or resembling a crossopterygian. [1860 65; < NL …   Universalium

  • Hans C. Bjerring — Hans Christian Bjerring (born May 30, 1931) is a Danish Swedish vertebrate paleontologist and comparative anatomist. He has spent his career at the Swedish Museum of Natural History in Stockholm, Sweden, as curator at the Department of… …   Wikipedia

  • Coelacanth — Temporal range: Devonian–Recent …   Wikipedia

  • Eusthenopteron — Taxobox name = Eusthenopteron fossil range = Late Devonian image width = 240px image caption = life restoration of Eusthenopteron foordi regnum = Animalia phylum = Chordata subphylum = Vertebrata classis = Sarcopterygii subclassis =… …   Wikipedia

  • Diabolepis — Temporal range: Early Devonian Scientific classification Kingdom: Animalia Phylum: Chordata Subphylum …   Wikipedia

  • ethmosphenoid — part of the cranium in front of the intracranial joint in Crossopterygii; behind it is the otico occipital portion …   Dictionary of ichthyology

  • 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

  • parietal shield — a set of bones covering the skull roof posterior to the intracranial joint in Crossopterygians …   Dictionary of ichthyology

  • pineal shield — a set of bones covering the skull roof posterior to the intracranial joint in Crossopterygians …   Dictionary of ichthyology

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