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Our knowledge of the primitive and aberrant early tetrapod Crassigyrinus scoticus was based on a partial skull roof and mandibles from the Lower Carboniferous of Gilmerton, Edinburgh, plus a skeleton… (More)
A complete description is given of all the known material attributable to Anthracosaurus russelli Huxley. Apart from one skull specimen from Usworth Colliery, Washington, Tyne and Wear, England, all… (More)
Amphibian material collected by Mr J. A. Coope from Swanwick Colliery, Derbyshire was developed mechanically and with pyridine. The described remains consist of imperfect skulls of two species of… (More)
SUMMARY I. The traditional view of the origin of tetrapod vertebrates is that they are descendants of fossil osteolepiform fish, of which Eusthenopteron is best known. In recent years both that… (More)
In the early decades of the nineteenth century, the most important disagreement among comparative anatomists was not evolution versus "special creation" but between advocates of "transcendental… (More)
Despite several important discoveries, extending over more than 120 years, our knowledge of early land vertebrates is still sparse. The earliest tetrapod remains are known from the Upper Devonian of… (More)