A Critical Revision of the Rugose Corals described by W. Lonsdale in Murchison's ‘Silurian System’

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Abstract
W. Lonsdale, in R. I. Murchison's ‘Silurian System’, 1839, pp. 675–94, pis. xv, xv bis , xvi, & xvi bis , described and figured a number of Silurian corals and polyzoa. In view of the prominence of this work in the literature of Palæozoic corals and polyzoa, and the importance to nomenclature of a right interpretation of many of Lonsdale's figured forms, it is desirable that whenever possible the types and figured specimens should be re-examined and their internal structure carefully investigated. It should be noted that our paper deals solely with the Rugose corals. The genotypes of several genera are involved, as well as the types of a number of species. Many of Lonsdale's forms have been misinterpreted by later authors, and placed by them in the synonymies of totally different coral-species. Our paper has issued as a by-product of a work of wider scope begun in 1923—namely, an investigation of all the genera to which Palæozoic corals have been referred, with a view to determining their genotypes; it is also auxiliary to our impending publication dealing with the Silurian corals described in Linnæus's ‘Corallia Baltica’ and with the genera and species involved in a consideration of these. It aims at identifying unmistakably Lonsdale's Rugose coral-species, describing in detail those which do not come within the scope of our other work, and only very briefly considering such as will be fully described in that work. It has, however, been found desirable to consider also several of McCoy's types, as well as

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