Abstract
IN NATURE of Jan. 19, a letter appeared from Prof. Wyville Thomson defending the expressions, “we are still living in the Cretaceous epoch,” “the chalk is being formed at present in the bed of the Atlantic.” When first this announcement was made, it was followed up by various strong comments implying that the similarity of the Atlantic mud to the chalk in lithological character, and in many of the imbedded organisms* “would seem to unsettle much that has generally been accredited to geological science,” would, in fact, revolutionise geological classification.
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HUGHES, T. The Cretaceous Period. Nature 3, 308–309 (1871). https://doi.org/10.1038/003308c0
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DOI: https://doi.org/10.1038/003308c0
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