...thickening is proved ,in a most conclusive manner. If the account just given of the development of the limbs is an accurate record of what really takes place,...limbs are the remnants of continuous lateral fins. The unpaired dorsal fin develops as a continuous thickening, which then grows up into a projecting...

...possible to deny that some light is thrown by it upon the first origin of the vertebrate limbs. The fact can only bear one interpretation, viz : that the limbs are the remnants of continuous lateral fins.'1'' " The development of the limbs is almost identically similar to that of the dorsal fins."...

...possible to deny that some light is thrown by it upon the first origin of the vertebrate limbs. The fact can only bear one interpretation, viz : that the limbs are the remnants of continuous lateraljins." "The development of the limbs is almost identically similar to that of the dorsal fins."...

...thickening is proved in a most conclusive manner. If the account just given of the development of the limbs is an accurate record of what really takes place,...limbs are the remnants of continuous lateral fins. The unpaired dorsal fin develops as a continuous thickening, which then grows up into a projecting...

...of epiblast which form the rudiments of the unpaired fins." After giving more details, Balfour says, "The facts can only bear one interpretation, viz....limbs are the remnants of continuous lateral fins." Shortly afterwards (1877), but quite independently, JAMES K. THACHER was led by a comparative study...

...derived from the septa separating adjacent gill-clefts. Balfour View. (1) This view as at present held was based by Balfour on his observation that in the...skeletal arrangements in the paired and unpaired fins. (2) The Gegenbaur view is based upon the skeletal structures within the fin. (a) According to this...

...1876. BALFOUR beschreibt zunächst die erste Entwicklung der Selachierflosse und sagt dann (p. 133): »The facts can only bear one Interpretation, viz.:...limbs are the remnants of continuous lateral fins« (vgl. A Monograph of the Development of Elasmobranch Fishes. London 1878, p. 102,. Im Jahre 1877 erschien...

...longitudinal ridge of thickened epiblast — of which indeed they are but exaggerations. In Balfour 's own words referring to these observations: 'If the...theory is suggested by Mr. J. Graham Kerr (Cambridge Pltilos. Trans., 1899), who has given us the best recent summary of the theories on this subject. Mr....

...position in his "Monograph on the Development of the Elasmobranch Fishes" of 1878, where he declared, "The facts can only bear one interpretation, viz.:...that the limbs are the remnants of continuous lateral fins."*2 The shark embryo showed lateral lines running along the length of the body, and it was natural...

...derived from the septa separating adjacent gill-clefts. Balfour View. (1) This view as at present held was based by Balfour on his observation that in the...skeletal arrangements in the paired and unpaired fins. (2) The Gegenbaur view is based upon the skeletal structures within the fin. (a) According to this...