A Pictorial Atlas of Fossil Remains, consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology."

by Gideon Algernon Mantell

Fossil Shells.

Fig. 1. A perfect specimen of one valve, showing the character of the hinge of Cucullæa decussata, of Parkinson. London clay. Herne Bay.

Fig. 2. Interior view of Crassatella tumida, of Lamarck. Eocene strata, Paris.

Fig. 3. Cardium Hillanum, of Sowerby. A beautiful silicified bivalve from Blackdown.

Fig. 4. Nucula ovum, of Sowerby. A common bivalve, in the Lias, Yorkshire.

Fig. 5. Inner view of Cyrena deperdita, of Parkinson. Plastic clay, Woolwich.

Fig. 6. Lima gigantea, of Sowerby, from Lyme Regis. This is a young and small specimen of a large bivalve that occurs in great perfection in the Lias.

Fig. 7. Cardinia Listeri, of Sowerby. From the Lias, Gloucestershire.

Fig. 8. Cast of a bivalve; genus uncertain.

Figs. 9 to 12. These fossils are the Trigonellites of Mr. Parkinson; and have since been referred to a genus named Aptychus. Their true relations are very problematical. Though found in pairs, there is no hinge or natural connexion. Some naturalists suppose they may belong to the internal organization of Ammonites, because certain kinds have been found collocated with particular species of that genus of Cepholopoda. At present I do not think there is any satisfactory evidence as to their real nature. Species occur in the Kimmeridge clay, and other subdivisions of the Oolite formation.