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The Origin of Vertebrates

Nature volume 113, pages 708709 (17 May 1924) | Download Citation

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Abstract

MORE than 100 years ago Geoffroy St. Hilaire compared a vertebrate to an anthropod turned upside down, and afterwards Semper and Dohrn developed on similar lines a theory of the derivation of the vertebrate from an annelid. These theories met with many serious difficulties, not the least of which is the position of the mouth, and in spite of many ingenious suggestions to account for the disappearance of the old and the formation of the new mouth, they have rightly never gained general acceptance.

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DOI

https://doi.org/10.1038/113708a0

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  1. Search for E. S. GOODRICH in:

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