| 21. | It had skull, pectoral girdle and forelimb material preserved, all of which were missing from the holotype.
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| 22. | Most of the bones of the pectoral girdle and forelimb are known, although sternal bones are not preserved.
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| 23. | The genus is known only from a lower jaw, a vertebra, and fragments of a pectoral girdle.
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| 24. | This bone was later reinterpreted as an interclavicle, part of the pectoral girdle common to all early therapsids.
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| 25. | An opercularis muscle connects the latter to the pectoral girdle, and is kept under tension when the animal is alert.
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| 26. | The pelvic and pectoral girdles fused as the animals aged, with full pectoral fusion attained by one year of age.
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| 27. | Larson " et al . " also studied the relatively short clavicle and the unusual formation of the pectoral girdle.
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| 28. | Unlike the other pectoral fin rays, the individual fin segments of the spine are pectoral spine across the pectoral girdle channel.
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| 29. | There is also a loss of the dorsal pectoral girdle bones, which permits a large degree of movement for the shoulder.
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| 30. | The outer pair of mandibular barbels extends just short of the pectoral girdle, and contains four to seven branches without secondary branches.
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