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1980 | 25 | 3-4 |
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Periodic development of dimetrism in some favositid corals

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Sporadic dimetrism in some specimens of two English Wenlock favositid coral species, Favosites multipora and Paleofavosites rugosus, is investigated by serial sectioning. The dimetric appearance is found to be periodically developed within a colony where it occurs and to be caused by fluctuating rates of corallite increase. Peak increase corresponds in a regular pattern to other periodic features in these corals. Zones of close-spaced tabulae, thickened corallite walls and well developed septal spines form bands of denser growth occurring with an annual periodicity and it is concluded that increase and therefore dimetrism is also seasonally controlled in these corals. Entraining factors and the cause of modifications in the relative timing of peak increase are discussed. Dimetrism in these corals is considered to be wholly of ecophenotypic origin and of no taxonomic significance.
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  • Department of Geology, The University, Newcastle upon Tyne NEl 7RU, U.K.
  • Institute of Geological Sciences, Ring Road Halton, Leeds LSl5 8TQ, U.K.
  • BUDDENMEIER, R. W. 1974. Environmental controls over annual and lunar monthly cycles in hermatypic coral calcification. - Proc. 2nd Intern. Coral Reef Symp., 2, 259-267. Brisbane.
  • - and KINZIE, R. A., III 1975. The chronometric reliability of contemporary corals. - In: G. D. Rosenberg and S. K. Runcorn (eds.), Growth Rhythms and the History of the Earth's Rotation, 135-147. Wiley, London.
  • - , MARAGOS, J. E. and KNUTSON, D. W. 1974. Radiographic studies of reef coral exoskeletons: rates and patterns of coral growth. - J. Exp. Mar. Biol. Ecol., 14. 179-200.
  • DODGE, R. E. and THOMSON, J. 1974. The natural radiochemical and growth records in contemporary hermatypic corals from the Atlantic and Caribbean. - Earth Planet. Sci. Lett., 23, 313-322.
  • - and VAISNYS, J. R. 1975. Hermatypic coral growth banding as environmental recorder. - Nature, Lond. 258, 706-8.
  • EDWARDS, H. M. et HAIME, J. 1851. Monographie des Polypiers fossiles des Terrains palaeozoïques. - Arch. Mus. Nation. Hist. Nat. Paris, 5, 1-501.
  • JONES, O. A. 1936. The controlling effect of the environment upon the corallum in Favosites; with a revision of some massive species on this basis. - Ann. Mag. Nat. Hist., ser. 10, 17, 1-24.
  • KNUTSON, D. W., BUDDEMEIER, R. W. and SMITH, S. V. 1972. Coral chronometers: seasonal growth bands in reef corals. - Science, 171, 270-272.
  • MA, T. Y. H. 1933. On the seasonal change of growth in some Palaeozoic corals. - Proc. Imp. Akad. Tokyo, 9, 407-409.
  • - 1934a. On the seasonal change of growth in a reef coral, Favia speciosa (Dana), and the water-temperature of the Japanese seas during the latest geological times. - Ibidem, 10, 353-356.
  • - 1934b. On the growth rate of reef corals and the sea water temperature in the Japanese Islands during the latest geological times. - Sci. Rep. Tohoku Imp. Univ., ser. 2 (Geol.), 16, 166-189.
  • MACINTYRE, I. G. and SMITH, S. V. 1974. X-radiographic studies of skeletal development in coral colonies. Proc. 2nd Intern. Coral Reef Symp. 2, 277-287. Brisbane.
  • OLIVER, W. A., Jr. 1966. Description of dimorphism in Striatopora flexuosa Hall. - Palaeontology, 9, 448-454.
  • - 1975. Dimorphism in two new genera of Devonian tabulate corals. - Prof. Pap. U.S. Geol. Surv., 143-D, 1-9.
  • - 1979. Review: Sponges they are not. - Paleobiology, 5, 188-190.
  • PHILIP, G. M. 1960. The Middle Palaeozoic squamulate favositids of Victoria. - Palaeontology, 3, 186-207.
  • POWELL, J. H. and SCRUTTON, C. T. 1978. Variation in the Silurian tabulate coral Paleofavosites asper, and the status of Mesofavosites. - Ibidem, 21, 307-319.
  • ROSS, M. H. 1953. The Favositidae of the Hamilton Group (Middle Devonian of New York). - Bull. Buffalo Soc. Nat. Sci., 21, 37-89.
  • SCRUTTON, C. T. 1968. Colonial Phillipsastraeidae from the Devonian of south-east Devon, England. - Bull. Brit. Mus. Nat. Rist. (Geol.), 15, 5, 181-281.
  • - 1978. Periodic growth features in fossil organisms and the length of the day and month. In: P. Brosche and J. Sündermann (eds.), Tital Friction and the Earth's Rotation, 154-196. Springer-Verlag, Berlin.
  • SMITH, A. G., BRIDEN, J. C. and DREWRY, G. E. 1973. Phanerozoic World maps. In: N. F. Hughes (ed.), Organisms and Continents through Time. - Spec. Pap. Palaeont. 12, 1-42.
  • (SOKOLOV, В. S.) СОКОЛОВ, В. С. 1955. Табуляты палеозоя европейской части СССР, Введение. — Тр. ВСЕГЕИ, н.с. 85, 1-528.
  • STEARN, C. W., SCOFFIN, T. P. and MARTINDALE, W. 1977. Calcium carbonate budget of a fringing reef on the west coast of Barbados, Part 1. Zonation and productivity. - Bull. Mar. Sci, 21, 479-510.
  • STEL, J. H. 1978. Studies on the palaeobiology of favositids. - viii+247 pp. Groningen.
  • SUTTON, I. D. 1966. The value of corallite size in the specific determination of the tabulate corals Favosites and Palaeofavosites. - Mercian Geol., 1, 255-263.
  • WEBER, J. N., DEINES, P., WHITE, E. W. and WEBER, P. H. 1975. Seasonal high and low density bands in reef coral skeletons. - Nature, Lond., 255, 697-8. (Weber et al. 1975a).
  • -, WHITE E. W. and WEBER, P. H. 1975. Correlation of density banding in reef coral skeletons with environmental parameters: the basis for interpretation of chronological records preserved in the coralia of corals. - Paleobiology, 1, 137-149. (Weber et al. 1975b).
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