Abstract
THE peculiar phenomenon referred to in the above letter is well known to occur among Secondary fossils, and has been fully explained by Prof. J. W. Judd in the Geological Magazine for 1871, p. 385, where several figures of Oolitic forms are given in illustration. The same peculiarity is also seen in certain oysters from the Lias. The thin growing edge of the shell adapts itself to the inequalities of the surface upon which it grows; the upper valve, being also thin, reproduces the form of the lower valve. The shell becomes thickened by additional layers on the inside, which thus gradually loses the markings that are retained upon the outer surfaces.
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N., E. Remarkable Fossil Oysters from Syria. Nature 66, 607 (1902). https://doi.org/10.1038/066607a0
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DOI: https://doi.org/10.1038/066607a0
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