Abstract
IN a recent communication1, Frarey and McLaren described vermiform markings on ripple-marked bedding surfaces of Huronian quartzites near Sault Ste. Marie, Ontario, and interpreted these markings as possible metazoan relics, while discounting the alternative hypotheses of desiccation cracks ‘worm casts’ (or gut casts of any kind) and feeding burrows. During the past several years very similar markings have been described from Proterozoic rocks in other regions.
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References
Frarey, M. J., and McLaren, D. J., Nature, 200, 461 (1963).
Faul, H., Nature, 164, 32 (1949).
Faul, H., J. Paleo., 24, 102 (1950).
Wheeler, H. E., and Quinlan, J. L., J. Sed. Petr., 21, 141 (1951).
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BARNES, W., SMITH, A. Some Markings associated with Ripple-marks from the Proterozoic of North America. Nature 201, 1018–1019 (1964). https://doi.org/10.1038/2011018b0
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DOI: https://doi.org/10.1038/2011018b0
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