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Studies of tooth implantation in fossil tetrapods using high-resolution X-radiography

Published online by Cambridge University Press:  01 May 2009

N. C. Fraser  and
C. G. Shelton
N. C. Fraser
Affiliation:
Department of Zoology, University of Cambridge, Cambridge CB2 3EJ
C. G. Shelton
Affiliation:
Shell Research Ltd., Thornton Research Centre, P.O. Box 1, Chester CHI 3SH
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Abstract

The concept that reptilian tooth implantations fall neatly into a number of separate categories which can be used in phylogenetic studies is called into question. The use of microfocal X-radiography in preliminary studies of reptilian dentitions reveals that, at least in sphenodontids, there is no clear distinction between acrodonty and pleurodonty. Although the technique is used here specifically in connection with microvertebrates, it may have considerable potential in evaluating internal structures in a wide range of fossils.

Type
Articles
Information
Geological Magazine , Volume 125 , Issue 2 , March 1988 , pp. 117 - 122
Copyright
Copyright © Cambridge University Press 1988

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References

Benton, M. J. 1984. Tooth form, growth and function in Triassic rhynchosaurs (Reptilia, Diapsida). Paleontology 27, 737–76.Google Scholar
Bergström, J., Stürmer, W. & Winter, G. 1980. Palaeoisopus, Palaeopantopus and Palaeothea, pycnogonid arthropods from the Lower Devonian Hunsrück Slate, West Germany. Paläontologische Zeitschrift 54, 7–54.CrossRefGoogle Scholar
Burch, G. J. 1896. Plant structure revealed by Röntgen rays. Nature 54, 111–12.Google Scholar
Coslett, V. E. & Nixon, W. C. 1960. X-ray Microscopy. Cambridge: Cambridge University Press, 406 pp.Google Scholar
Cunningham, T. G., Davies, R. U. & Graham, S. C. 1986. The application of X-ray microscopy in materials science. Journal of Microscopy 144, 261–75.CrossRefGoogle Scholar
Cunningham, T. G. & Graham, S. C. 1986. Imaging the internal structure of bulk materials by microfocal radiography. Materials and Design 7, 223–31.CrossRefGoogle Scholar
Edmund, A. G. 1960. Tooth replacement phenomena in the lower vertebrates. Royal Ontario Museum, Life Sciences Division, Contributions 52, 1–190.Google Scholar
Edmund, A. G. 1969. Dentition. In Biology of the Reptilia, I (ed. Gans, C. Bellairs, A. d'a.), pp. 117–200. London: Academic Press.Google Scholar
Evans, S. E. 1980. The skull of a new eosuchian reptile from the Lower Jurassic of South Wales. Zoological Journal of the Linnean Society 70, 203–64.CrossRefGoogle Scholar
Evans, S. E. 1984. The classification of the Lepidosauria. Zoological Journal of the Linnean Society 82, 87–100.CrossRefGoogle Scholar
Franks, A. & Stedman, M. 1985. Reflection X-ray microscopy. Journal of Microscopy 138, 237–44.CrossRefGoogle Scholar
Fraser, N. C. 1982. A new rhynchocephalian from the British Upper Trias. Palaeontology 25, 709–25.Google Scholar
Fraser, N. C. & Walkden, G. M. 1984. The postcranial skeleton of the Upper Triassic sphenodontid Planocephalosaurus robinsonae. Palaeontology, 27, 575–95.Google Scholar
Hedley, R. H. 1957. Microradiography applied to the study of Foraminifera. Micropaleontology 3, 19–28.CrossRefGoogle Scholar
Held, A. J., Baud, C. & Fiore, G. 1961. Étude microradiographique de dents humaines fossiles. Archives of Oral Biology. Special Supplement 4, 1–5.CrossRefGoogle Scholar
Heycock, C. T. & Neville, F. H. 1898. Röntgen ray photography applied to alloys. Journal of the Chemistry Society 73, 714–23.CrossRefGoogle Scholar
Hooper, K. 1959. Microradiography in quantitative micropaleontology techniques.Proceedings of the Second International X-ray Conference Stockholm 216–23.Google Scholar
Malsch, F. 1939. Generation of largely magnified X-ray shadowgraphs. Naturwissenschaft 27, 854–5.CrossRefGoogle Scholar
Robinson, P. L. 1973. A problematic reptile from the British Upper Trias. Journal of the Geological Society of London 129, 457–79.CrossRefGoogle Scholar
Robinson, P. L. 1976. How Sphenodon and Uromastyx grow their teeth and use them. In Morphology and Biology of Reptiles (ed. Bellairs, A. d'a. Cox, C. B.), pp. 43–64. London: Academic Press.Google Scholar
Romer, A. S. 1956. Osteology of the Reptiles, pp. 442–4. Chicago: University of Chicago Press.Google Scholar
Sandy, M. R. 1986. Brachiopod systematics and the transverse serial sectioning method: some recommendations for this technique and clarification of a taxonomic problem assisted by this method. In Les Brachiopodes fossiles et actuels Biostratigraphie du Paléozoique, 4, (ed. Rachboeuf, P. R. Emig, C. C.), pp. 143–150. Brest: Université de Bretagne Occidentale.Google Scholar
Schmahl, G. & Rudolph, D. (eds.) 1984. X-ray Microscopy. Berlin: Springer.Google Scholar
Schmidt, R. A. M. 1952. Microradiography of micro fossils with X-ray diffraction equipment. Science 115, 94–5.CrossRefGoogle Scholar
Smith, H. M. 1958. Evolutionary lines in tooth attachment and replacement in reptiles: their possible significance in mammalian dentition. Transactions of the Kansas Academy of Science 61, 216–25.CrossRefGoogle Scholar
Stürmer, W. 1970. Soft parts of cephalopods and trilobites: some surprising results of X-ray examination of Devonian slates. Science 170, 1300–2.CrossRefGoogle Scholar
Stürmer, W. 1983. Interdisciplinary palaeontology. Interdisciplinary Science Reviews 9, 123–36.CrossRefGoogle Scholar
Stürmer, W. 1985. A small coleoid cephalopod with soft parts from the Lower Devonian discovered using radiography. Nature 318, 53–5.Google Scholar
Stürmer, W. & Bergström, J. 1973. New discoveries on trilobites by X-rays. Paläontologische Zeitschrift 47, 104–41.CrossRefGoogle Scholar
Stürmer, W. & Bergström, J. 1976. The arthropods Mimetaster and Vachonisia from the Devonian Hunsrück Shale. Paläontologische Zeitschrift 50, 78–111.Google Scholar
Stürmer, W. & Bergström, J. 1978. The arthropod Cheloniella from the Devonian Hunsrück, Shale. Paläontologische Zeitschrift 52, 57–81.CrossRefGoogle Scholar
Stürmer, W. & Bergström, J. 1981. Weinbergina, a xiphosurian arthropod from the Devonian Hunsrück Slate. Paläontologische Zeitschrift 55, 237–55.Google Scholar
Whiteside, D. I. 1986. The head skeleton of the Rhaetian sphenodontid Diphydontosaurus avonis gen. et sp.nov. and the modernizing of a living fossil. Philosophical Transactions of the Royal Society of London B, 312, 379–430.Google Scholar
Wykoff, R. W. G., Hoffman, V. G. & Matter, P. 1963. Microradiography of fossilised teeth. Science 140, 78–80.CrossRefGoogle Scholar