XXVI.—Airtonia, a new brachiopod genus from the Lower Carboniferous of Yorkshire, with notes on replacement of shell substance by quartz

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(1934). XXVI.—Airtonia, a new brachiopod genus from the Lower Carboniferous of Yorkshire, with notes on replacement of shell substance by quartz. Annals and Magazine of Natural History: Vol. 14, No. 80, pp. 273-289.