The Medals of Creation, Volumes 1 and 2 / First Lessons in Geology and the Study of Organic Remains

by Gideon Algernon Mantell

"The Silurian System," by Sir R. I. Murchison, a splendid work on the rocks and fossils of the above formations, contains numerous figures of the shells peculiar to each group of strata; and many other species are delineated in the Memoir on the Devonian deposits of Devonshire and Cornwall, by Sedgwick and Murchison, Geol. Trans. New Series, vol. v. plates lii-lvii. A Memoir on the Palæozoic Rocks of Germany and Belgium, by the same distinguished geologists, is also accompanied by many figures of fossil shells belonging to the same geological epochs. Geol. Trans. New Series, vol. vi.

See also Prof. M'Coy's "Silurian Fossils of Ireland," and his Description of the British Palæozoic Fossils in the Woodwardian Museum at Cambridge, in Prof. Sedgwick's "Synopsis of the Classification of the British Palæozoic Rocks," of which two Parts are already published.

Carboniferous System. Ly. 308. Wond. p. 736.

Producta punctata; Wond. p. 736.
———– Martini; Ly. fig. 390.
Pleurotomaria flammigera; [Lign. 136, fig. 4.]
Euomphalus pentangulatus; [Lign. 136, fig. 1.]
Natica plicistria; [Lign. 136, fig. 3.]
Spirifera trigonalis; Wond. p. 736.
———– triangularis; Wond. p. 736.
———– glabra; Ly. p. 389.
Serpula carbonaria; Ly. fig. 375.
Avicula papyracea;—fig. 378.

For the shells of the Mountain Limestone, reference should be made to the second vol. of Prof. Phillips's "Geology of Yorkshire;" to Prof. M'Coy's "Carboniferous Limestone Fossils of Ireland;" and to Prof, de Konick's "Anim. Foss. Belg." The fossils of other portions of the Carboniferous System are illustrated in Phillips's "Palæozoic Fossils of Devon;"[395] and in Prestwich's Memoir on Coalbrook Dale (Geol. Trans.).

[395] To prevent confusion, it may be necessary to state that Professor Phillips, in the work referred to, terms the Silurian strata the "lower palæozoic" and the mountain limestone, the "upper palæozoic"

Magnesian Limestone and Trias. Ly. p. 301.

Producta calva; Ly. p. 203, fig. 337. Spirifera undulata;—fig. 338.		Permian.
Posidonia minuta;—p. 288, fig. 321. Avicula socialis;—fig. 322.		Triassic

Prof. King's elaborate Monograph on the Permian Fossils (published by the Palæontographical Society) should be consulted by the student.