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The Dinosaur Growth Plate: A Study in Paleohistology

  • Claudia Barreto (a1)


Paleontologists study past life through analysis of the fossil record. Vertebrate paleontologists are particularly interested in studying those animals with vertebral columns (backbones). The biology of vertebrates is dictated by the millions of cells that make up these complex animals. Histology is the science concerned with the microscopic anatomy of cells, tissues and organs. All life forms are made of cells (membrane-bound bodies within which the chemical reactions necessary to sustain life occur). In complex animals, such as vertebrates, similar cells work together in associations called tissues. Typically, only the harder tissues of the vertebrate body become preserved as fossils. An example of a hard tissue is bone. Our ability to derive information from a fossil is dependent on how well it is preserved and on the techniques we use to study the specimen. Certain fossilization regimes conserve cellular and sub-cellular structure and microscopic examination of appropriately prepared specimens permits detailed study of fossil bone histology (Barreto and Albrecht 1993). The microscopic structure of bone reflects the activity of the cells that produced it. All organisms on earth, and all the cells that compose them are descended from a common ancestral cell; and we have no reason to believe that cells that produced bone millions of years ago were different from bone cells we can study in living animals today. It is possible to compare the cellular structure of well preserved fossil bone to modern bone. Such research, called “paleohistology,” allows interpretation of the biology of extinct vertebrates (Reid 1984; Ricqles 1976; Ricqles 1980).



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Barreto, C., Albrecht, R.M., Bjorling, D.E., Horner, J.R., Wilsman, N.J. 1993. Evidence of the growth plate and the growth of long bones in juvenile dinosaurs. Science 262:20202023.
Barreto, C. and Albrecht, R.M. 1993. Preparation of dinosaur fossils for scanning electron microscopic evaluation of bone histology. Scanning Microscopy 7(2):751754.
Barreto, C. and Wilsman, N.J. 1994. The volume of the hypertrophic chondrocyte and rate of growth in the avian growth plate. Research in Veterinary Science 56:5361.
Behrensmeyer, A.K. and Hill, P.H. 1980. Fossils in the Making. (Prehistoric Archeology and Ecology), Butzer, K.W. and Freeman, L.G., Series Editors. University of Chicago Press, Chicago, 338 pp.
Brighton, C.T. 1978. Structure and function of the growth plate. Clinical Orthopaedics and Related Research, 136:2232.
Gaffney, E.S. 1979. An introduction to the logic of phylogeny reconstruction, in Phylogenetic Models (North American Paleontological Convention II) 1977, Lawrence KS), Cracraft, J. and Eldredge, N., Editors. Columbia University Press, New York, p. 79111.
Gauthier, J. 1986. Saurischian monophyly and the origin of birds. in The Origin of Birds and the Evolution of Flight, Padian, K., Editor, California Academy of Sciences Memoir #8, San Francisco, p. 155.
Horner, J.R. 1982. Evidence of colonial nesting and ‘site fidelity’ among ornithischian dinosaurs. Nature 297:675676.
Horner, J.R. 1988. Digging Dinosaurs. Workman Publishing, NY, 210 pp.
Hunziker, E.B. 1988. Growth plate structure and function. Pathological and Immunopathological Research, 7:913.
Ostrom, J.H. 1976. Archaeopteryx and the origin of birds. Biological Journal of the Linnean Society, 8:91182.
Reid, R.E.H. 1984. Primary bone and dinosaurian physiology. Geology Magazine, 121:589.
Ricqles, A.J.d. 1976. On bone histology of fossil and living reptiles, with comments on its functional and evolutionary significance. in Morphology and Biology of Reptiles, Bellairs, A. D. and Cox, C., Editors. Linnean Society, London. p. 123150.
Ricqles, A.J.d. 1980. Tissue structures of dinosaur bone in A Cold Look at the Warm-Booded Dnosaurs, Thomas, R.D.K. and Olson, E.C., Editors. Westview, Boulder. p. 103139.
Mjs, Rudwick 1985. The Meaning of Fossils. University of Chicago Press, Chicago, 288 pp.

The Dinosaur Growth Plate: A Study in Paleohistology

  • Claudia Barreto (a1)


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