Sphenotic


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Sphe`not´ic


a.1.(Anat.) Of, pertaining to, or designating, the sphenotic bone.
Sphenotic bone
(Anat.) a bone on the anterior side of the auditory capsule of many fishes, and connected with, or adjoining, the sphenoid bone.
n.1.(Anat.) The sphenotic bone.
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6): median ethmoid forming septum between eyes, anterior and posterior edges ossified; anterior of frontals overlapping median ethmoid; sagittal crest present along dorsal midline where left and right frontal bones fuse; sagittal crest confluent with supraoccipital crest; anterolateral edge of frontals possessing well-developed transverse process; this process forming open tube supporting cephalic sensory canal; sphenotic short, lacking well-developed anterior process.
Abbreviations used in figures: ect, ectopterygid; ext, extrascapular; mes, mesopterydoid; met, metapterygoid; post, postemporal; preo, preopercle; qua, quadrate; sph, sphenotic.
The interior (ventral) surface of the left fr contains a fragment of the lateral ethmoid (le) and sphenotic (sph).
Nasal, preocular, supraocular, postocular, tympanic, coronal, parietal, and supratemporal spines invariably present; all major head spines strong, except for coronal spines, which are weak; supraocular and postocular spines and parietal ridge often rough; sphenotic spines often prominent, occasionally moderate or small in size.
Nasal, preocular, supraocular, postocular, tympanic, coronal, parietal, and supratemporal spines invariably present; all major head spines strong, except for the coronal spines, which are weak; supraocular and postocular spines and parietal ridge often rough; sphenotic spines obsolete, occasionally moderate in size.