The development of the ethmoidal region of Ascaphus truei (Stejneger)
1982
Baard, E. H. W. (Ernst Hendrik Wolfaardt) | Jurgens, J. D. | University of Stellenbosch. Faculty of Science. Dept. of Botany and Zoology | Jacobs, Ivan
Thesis (MSc)--University of Stellenbosch, 1982.
Afficher plus [+] Moins [-]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.
Afficher plus [+] Moins [-]No Afrikaans abstract available
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