Development of the bony skull in common sole: brief survey of morpho‐functional aspects of ossification sequence

摘要: The postembryonic development of the bony cephalic skeleton in common sole Solea solea, observed from hatching to juvenile stage or postmetamorphic larva, appears follow a similar chronological order that other Pleuronectiformes and Perciformes sequence bone formation is response functional demands. At hatching, S. solea has no structure. On day 4, only outlines maxillaries opercular bones are visible. 6, thin parasphenoid between orbits isolates braincase buccal cavity making food ingestion possible without any impact on brain. 8, dentaries form two small preopercular appear each side head. 9, at weaning yolk sac, branchial arches support gill filaments (used for respiration trapping phytoplankton which pass through open mouth). 10, premaxillaries develop front maxillaries, superimposing typical feature species possessing an acanthopterygian protractile mouth adult stage. 12, frontals above set complete. 18, migration left eye begins. 20, moved median crest 23, both eyes located same side. 26, formed by basioccipital, exoccipitals, pterotics, sphenotics supraoccipital. 50, new structures have appeared, others developed undergone extensive remodeling due metamorphosis.