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Interambulacral Plate Atrophy in Lovenia woodsi (Etheridge Fil.)

Published online by Cambridge University Press:  01 May 2009

G. M. Philip
G. M. Philip
Affiliation:
Department of Geology, University of Melbourne, Victoria, Australia.
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Abstract

Plate atrophy (“plate crushing”) giving rise to interambulacral plates analogous to demi-plates immediately above the ambitus is described in the Miocene spatangoid Lovenia woodsi, from Beaumaris, Victoria. It appears to be caused by the development of large primary tubercles on the aboral surface, which causes the expansion of the lowest tubercle-bearing plates during ontogeny, so that the more ventral interambulacral plates are squeezed against the ambitus.

Type
Articles
Information
Geological Magazine , Volume 94 , Issue 5 , October 1957 , pp. 402 - 408
Copyright
Copyright © Cambridge University Press 1957

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References

REFERENCES

Bather, F. A., 1909. Triassic Echinoderms of Bakony. Wiss. Ergebn. Balatonsee, Budapest, 1, Teil 1, Pal. Anhang.Google Scholar
Deutler, F., 1926. Über das Wachstum des Seeigelskellets. Zool. Jarhb. (Anat.), xlviii, 119–200.Google Scholar
Duncan, P. M., 1885. On the Structure of the Ambulacra of some Fossil Genera and Species of Regular Echinoidea. Quart. Journ. Geol. Soc., xli, 419–453.CrossRefGoogle Scholar
Etheridge, R., 1875. Descriptions of a new species of the Genus Hemipatagus Desor. … Quart. Journ. Geol. Soc., xxxi, 444–450.CrossRefGoogle Scholar
Gordon, I., 1926. The Development of the Calcareous Test of Echinocardium cordatum. Phil. Trans. Roy. Soc. London, B 215, 255–313.Google Scholar
Hawkins, H. L., 1916. A remarkable Structure in Lovenia forbesi from the Miocene of Australia. Geol. Mag., liii, 100–5.Google Scholar
Hawkins, H. L., 1920. The Morphology and Evolution of the Ambulacrum in the Echinoidea Holectypoida. Phil. Trans. Roy. Soc. London, B 209, 377–480.Google Scholar
Ikeda, H., 1931. Morphological changes occurring with the growth of the calcareous test in the heart urchin Lovenia elongata. Annot. Zool. Japon., xiii, 243–250.Google Scholar
Lambert, J., 1900. Étude sur quelques Échinides de l'Infra-Lias et du Lias. Bull. Soc. Sci. Hist. Nat. Yonne, liii, 3–57.Google Scholar
Lovén, S., 1874. Études sur les Échinoïidées. K. Svensk. Vet-Akad. Handl., xi, No. 7, 1–91.Google Scholar
Mortensen, T., 1951. A Monograph of the Echinoidea. V2 (Spatangoidea, II). Copenhagen.Google Scholar