A Manual of Elementary Geology / or, The Ancient Changes of the Earth and its Inhabitants as Illustrated by Geological Monuments

by Sir Charles Lyell

Fig. 376. Cypris inflata, natural size, and magnified. Murchison.[325-B]

In the Edinburgh coal-field, at Burdiehouse, fossil fishes, mollusca, and cypris, very similar to those in Shropshire and Staffordshire, have been found by Dr. Hibbert.[325-C] In the coal-field also of Yorkshire there are freshwater strata, some of which contain shells referred to the genus Unio; but in the midst of the series there is one thin but very widely spread stratum, abounding in fishes and marine shells, such as Ammonites Listeri ([fig. 377.]), Orthoceras, and Avicula papyracea, Goldf. ([fig. 378.])[325-D]

Fig. 377.

Ammonites Listeri, Sow.

Fig. 378.

Avicula papyracea, Goldf. (Pecten papyraceus, Sow.)