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XXIX.—On the Development and Morphology of the Marsupial Shoulder Girdle

Published online by Cambridge University Press:  06 July 2012

R. Broom
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Extract

The various structures in the marsupial shoulder girdle are so unquestionably homologous with similar structures in the girdle of the human subject and of the Eutheria generally, that there has never been any difficulty in interpreting the parts in terms of human anatomy; but when the elements are compared with those in what we may consider to have been the ancestral condition, such as is exemplified in the shoulder girdle of the Monotremes, or of the Anomodonts, or in the more distantly related conditions met with in modern Reptiles and Amphibians, we are confronted with quite a number of difficulties, to which the most varied solutions have been applied by different morphologists. The chief difficulty in the way of comparing the typical mammalian girdle with that of the lower forms, is that in the girdle of the higher mammals certain structures are rudimentary, and, further, that the forms that have hitherto been examined have been so far removed from the ancestral stock that even a study of the early developmental conditions fails to give any clues that are more satisfactory than those afforded by comparative anatomy. Though it has been suspected that further results would be obtained from the study of the early condition in Marsupials and Monotremes, the embryos of these groups that have hitherto been studied have been too old to yield much further evidence than that obtained by a study of the adult forms.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 39 , Issue 3 , 1900 , pp. 749 - 770
Copyright
Copyright © Royal Society of Edinburgh 1900

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References

List of Literature Referred to

(1) Broom, R., “On the Existence of a Sterno-coracoidal Articulation in a Fœtal Marsupial,” Journ. of Anat. and Phys., vol. xxxi., 1897.Google Scholar
(2) Gegenbaur, C., “Clavicula und Cleithrum,” Morph. Jahrb., Bd. xxiii., 1895.Google Scholar
(3) Seeley, H. G., “Researches on the Structure, Organisation, and Classification of the Fossil Reptilia. vii. Further Observations on Pareiasaurus,” Phil. Trans., 1892, vol. 183, B.Google Scholar
(4) Parker, W. K., “A-Monograph on the Structure and Development of the Shoulder Girdle and Sternum,” Ray Society, 1867.Google Scholar
(5) Flower, W. H., Osteology of the Mammalia, 1st ed., Lond., 1870; 2nd ed., Lond., 1876.Google Scholar
(6) Wilson, J. T., and M'Kay, W. J. S., “On the Homologies of the Borders and Surfaces of the Scapula in Monotremes,” Proc. Linn. Soc., N.S.W., 1893.Google Scholar
(7) M'Kay, W. J. S., “The Morphology of the Muscles of the Shoulder Girdle in Monotremes,” Proc. Linn. Soc, N.S.W., 1894.Google Scholar
(8) Owen, R., Article “Monotremata,” Cyclopaedia of Anatomy and Physiology (Lond., 1847), vol. iiiGoogle Scholar
(9) Mivart, St George, “Anatomy of Echidna hystrix,” Trans. Linn. Soc. Lond., vol. xxv., 1866.Google Scholar
(10) Howes, G. B., “The Morphology of the Mammalian Coracoid,” Journ. of Anat and Phys., vol. xxi., 1887.Google Scholar
(11) Brühl, C. B., “Zootomie aller Thierklassen” (Wien, 1875).Google Scholar
(12) Seeley, H. G., “Researches on the Structure, etc., of Fossil Reptilia. viii. Further Evidences of the Skeleton in Deuterosaurus and Rhopalodon from the Permian Rocks of Russia,” Phil. Trans., 1894, vol. 185, B.Google Scholar
(13) Seeley, H. G., “Researches on the Structure, etc., of Fossil Reptilia, ix., sect. 5; On the Skeleton in New Cynodontia from the Karroo Rocks,” Phil Trans., 1895, vol. 186, B.Google Scholar
(14) Howes, G. B., “On the Coracoid of the Terrestrial Animals,” Proc. Zool. Soc. Lond., 1893.Google Scholar
(15) Lydekker, R., “Notes on the Coracoidal Element in Adult Sloths, with Remarks on its Homology,” Proc. Zool. Soc., 1893.Google Scholar
(16) Gegenbaur, C., Grundriss der Vergleichenden Anatomie, Leipzig.CrossRefGoogle Scholar
(17) Wiedersheim, R., Grundriss der Vergleichenden Anatomie der Wirbelthiere, 4te Aufl., Jena, 1898.Google Scholar
(18) Gegenbaur, C., “Ein Fall von erblichem Mangel der Pars Acromialis Claviculæ, mit Bemerkungen über die Entwickelung der Clavicula,” Jenaische Zeitschrift, 1864, Bd. i.Google Scholar
(19) Gotte, A., “Beiträge zur vergl. Morphologie der Skeletsystems der Wirbelthiere; Brustbein und Schultergürtel,” Arch. f. Mikr. Anat., Bd. xiv., 1877.Google Scholar
(20) Hoffmann, C. K., “Zur Morphologie des Schultergürtels und des Brustbeins bei Reptilien, Vögeln, Sängethieren und des Menschen,” Niederländ. Archiv.f. Zool., vol. v., 1879.Google Scholar
(21) Andrews, C. W., “On the Development of the Shoulder Girdle of a Plesiosaur (Cryptoclidus oxoniensis, Phillips, sp.),” Ann. and Mag. Nat. Hist., 1895.CrossRefGoogle Scholar