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The Study of Ammonites in Thin, Median Sections

Published online by Cambridge University Press:  01 May 2009

L. F. Spath
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Abstract

During the preparation of the second part of the Catalogue of Ammonoidea of the Trias, several hundred thin median sections of ammonites were prepared and examined. Structural features of such sections are shown to have helped in the interpretation of Didymites, Lobites, and Paraganides, and some reference is made to characters of other genera, mainly Trachyceratida.

Type
Articles
Information
Geological Magazine , Volume 87 , Issue 2 , April 1950 , pp. 77 - 84
Copyright
Copyright © Cambridge University Press 1950

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References

LIST OF WORKS CITED

Böhmers, J. C. A., 1936. Bau und Struktur von Schale und Sipho bei permischen Ammonoidea. Dissert., Univ. Amsterdam, 128 pp.Google Scholar
Branco, W., 1879–1880. Beiträge zur Entwickelungsgeschichte der fossilen Cephalopoden, I. Palaeontographica, xxvi, 17–50, Bau und Struktur von Schale und Sipho bei permischen Ammonoidea., xxvii, 1–70.Google Scholar
Buckland, W., 1836. Geology and Mineralogy, considered with reference to Natural Theology. Bridgewater Treatise, vi.Google Scholar
Grandjean, F., 1911. Le Siphon des Ammonites et des Belemnites. Bull. Soc. géol. France (4), x (1910), 496–519.Google Scholar
Hyatt, A., 1872. Fossil Cephalopods of the Museum of Comparative Zoology, Embryology. Bull. Mus. Comp. Zool., Harvard, iii, No. 5, 59–111.Google Scholar
Hyatt, A., 1889. Genesis of the Arietidae. Smithsonian Contr. to Knowl., No. 673, 1–239.Google Scholar
Hyatt, A., 1900. Cephalopoda. In Zittel's Textbook of Palaeontology, 1st Engl. ed. (Eastman), 502–604.Google Scholar
Miller, K. A., and Unklesbay, A. G., 1943. The Siphuncle of late Palaeozoic Ammonoids. Journ. Pal., xvii, 1–25.Google Scholar
Mojstsovics, E. v., 1893. Das Gebirge urn Hallstatt. Die Cephalopoden der Hallstätter Kalke. Abhandl. k.k. geol. Reichsanst., Wien, vi, 2nd half.Google Scholar
Smith, J. P., 1927. Upper Triassic marine invertebrate faunas of North America. U.S. Geol. Surv., Prof. Paper, 141, pp. iv, 262.Google Scholar
Spath, L. F., 1933. The Evolution of the Cephalopoda. Biol. Reviews, viii, 418–462.Google Scholar
Spath, L. F., 1936. The Phylogeny of the Cephalopoda. Pal. Zeitschr., xviii, 156–181.Google Scholar
Voorthuysen, J. H. van, 1940. Beitrag zur Kenntnis des inneren Baus von Schale und Sipho bei triadischen Ammoniten. Dissert, Univ. Amsterdam, 143 pp.Google Scholar