Tooth structure in Rhizodus hibberti Ag., a rhipidistian fish

dc.contributor.author	Cruickshank, A. R.
dc.date.accessioned	2014-12-23T10:48:37Z
dc.date.available	2014-12-23T10:48:37Z
dc.date.issued	1968
dc.description	Main article	en_ZA
dc.description.abstract	The structure of the large laniary teeth of the Lower Carboniferous rhipidistian fish Rhizodu hibberti Ag. is interpreted in terms of a new theory of tooth development. The structure of these teeth is found to correspond almost exactly to that of the synchronomorial scale as defined by Orvig (195 1) and Stensio (1961 ; 1962). These labyrinthodont teeth are thus shown to be composed of many tooth primordia, and are not a single unit of dentine. Some isolated Rhizodus teeth are described in which the entire labyrinthodont structure is missing, leaving an empty space inside the tooth. From this, a non-mechanical tooth removal mechanism is postulated.	en_ZA
dc.description.sponsorship	The Cambridgeshire Education Authority	en_ZA
dc.identifier.citation	None	en_ZA
dc.identifier.issn	0078-8554
dc.identifier.uri	http://hdl.handle.net/10539/16112
dc.language.iso	en	en_ZA
dc.publisher	Bernard Price Institute for Palaeontological Research	en_ZA
dc.relation.ispartofseries	None;
dc.subject	rhipidistian fish; teeth	en_ZA
dc.title	Tooth structure in Rhizodus hibberti Ag., a rhipidistian fish	en_ZA
dc.type	Article	en_ZA

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