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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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1

The development of the ethmoidal region of Ascaphus truei (Stejneger)

Baard, E. H. W. (Ernst Hendrik Wolfaardt) 12 1900 (has links)
Thesis (MSc)--University of Stellenbosch, 1982. / ENGLISH ABSTRACT:This study deals with the development of the ethmoidal region of Ascaphus truei Stejneger with special interest to the development of the nasal sacs, the diverticulum medium and the Jacobson's organ. This is to gather more information regarding the phylogeny of the structures. The opinions concerning the phylogenetical migration of the Jacobson's organ, are corroborated by the development of the organ in Ascaphus. The possible origin of the diverticulum medium from the nasal end of the nasolacrimal duct also is commented on. / No Afrikaans abstract available
Ascaphus truei Stejneger
North Western America
Frogs
Amphibians
Frog with a tail
Leiopelma
Acquatic life
Terrestrial life
Dissertations -- Zoology
Theses -- Zoology
Tailed frog
Skull
Nasal sacs
Diverticulum medium
Jacobson's organ

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