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Fig. 7 | Zoological Letters

Fig. 7

From: The phylum Vertebrata: a case for zoological recognition

Fig. 7

Late pharyngula of the Chinese soft-shelled turtle, Pelodiscus sinensis, immunostained to show peripheral nervous system and muscle primordia. The head–trunk interface is shown by the magenta broken line, delineating the spinal and branchiomeric nerves from each other. Note also that the myotomes are restricted to the trunk region of the embryo. Hyp, hypobranchial muscle anlage; IX, glossopharyngeal nerve; my, myotomes; sp., spinal nerves; V, trigeminal nerve; VII, facial nerve; X, vagus nerve; XII, hypoglossal nerve

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