. La morphologie des chordés. La morphologie (animaux) ; Chordés. moxillary endocraniun ^d'articulation en calcifications .V) autopalotine' articulation ethmoïde latéral ./^^ orbitosphenoid couverture pariétal postérieur antérieur orbite orbitosphenoid hyomondibular postparietol upratemporotobula articulation vith attaché pterotic suprooccipitol intercalare. bosioccipital intercalare vertèbre V Figure 5-2. Endocronium du saumon. A, vue latérale ; B, vue dorsale ; C, vue ventrale. bien sûr, est formée par un processus de croissance prootique la marge antérieure de la capsule otique pour répondre à un processus de base de la para

• Contributeur: Library Book Collection
• ID de l’image: RJ4M0R
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• Dimensions: 1343 x 1861 px | 22,7 x 31,5 cm | 9 x 12,4 inches | 150dpi

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. Chordate morphology. Morphology (Animals); Chordata. moxillary articulation ^calcifications in endocraniun .V) autopalotine articulation' lateral ethmoid ./^^ parietal roofing orbit anterior orbitosphenoid posterior orbitosphenoid hyomondibular articulation postparietol upratemporotobula vith attached pterotic intercalare. suprooccipitol V vertebra bosioccipital intercalare Figure 5-2. Endocronium of the salmon. A, lateral view; B, dorsal view; C, ventral view. sure is formed by a prootic process growing down from the anterior margin of the otic capsule to meet a basal process from the parachordal. The occipital arch fuses with the rear wall of the otic capsule above the vagus or jugular foramen, and a long, thin orbital cartilage extends from the otic capsule to the region of the nasal capsule. The trabeculae have moved relatively closer together and are joined across the midline for much of their length as a trabecula com- munis. From the lateral margins of the anterior plate of the trabeculae, an orbitonasal lamina extends upward on either side, and medially a nasal septum forms. The ante- rior end of the orbital cartilage forks. One part extends medially to join the nasal septum, the other grows out later- ally to the orbitonasal lamina; thus the roof of the nasal capsule is initiated and the orbitonasal foramen isolated. A transverse acrochordal connective develops between the parachordals. The tip of the notochord projects into this "dorsum sellae." The otic capsules are now completed laterally but are open medially. A slender epiphyseal tectum has developed between the orbital cartilages. The palato- quadrate cartilage is complete and its anterior end is in contact at two points with the nasal capsule and trabecular plate. A small basitrabecular process grows out in front of the palatine branch of the facial nerve and fuses with the lateral commissure, thus forming a foramen for that nerve. Posteriorly a synotic tectum joins the otic capsules. Wi

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