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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." — John Shaqi

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."Mantell, Gideon Algernon

Science

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."

Name: 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."
Author: Mantell, Gideon Algernon

Mantell, Gideon Algernon

Paleontology

[Illustration: Plate LXIII.]


PLATE LXIII.

Trigoniæ.

  Figs. 1, & 2, represent the structure of the hinge in both valves
         of a genus of bivalves of which numerous fossil species
         are met with in the secondary strata, and two or three
         species still exist in the Pacific Ocean. The genus is named
         _Trigonia_, from the form of the hinge, and the specific
         names below are those given by Mr. Parkinson.

  Fig. 3. _Trigonia clavellata_, of Parkinson, from the Kimmeridge
         clay, Hartwell, Bucks.

  Fig. 4. _Trigonia costata_, Oxford clay, Wilts.

  Fig. 5. _Trigonia excentrica_; upper greensand, Blackdown. Like
         most of the shells from this locality, the Trigoniæ are
         transmuted into silex.

  Fig. 6. _Trigonia dædalea_, Blackdown.

  Fig. 7. ---- _spinosa_, Blackdown.

  Fig. 8. Enlarged view of the spines of the above.

  Fig. 9. _Trigonia alæformis_, Blackdown.

  Fig. 10. ---- _rudis_, Blackdown.

  Fig. 11. A bivalve shell of the genus _Productus_ (_P.
         antiquatus_, of Sowerby?), from the Mountain limestone. See
         description of fig. 9, Plate LXVII.

  Fig. 12. Cast of a species of _Trigonia_ (_T. clavellata_), from
         the Portland rock. Many beds of this oolitic limestone are
         almost entirely made up of casts of Trigoniæ, and chiefly of
         this species.

  Fig. 13. _Trigonia sinuata_, from Blackdown.

  Figs. 14 to 18. "Different views of a species of _Harpax_."--_Mr.
         Parkinson._ (_Plicatula spinosa_). From the Lias,
         Gloucestershire.

  Fig. 14. The inner surface of the flat valve.

  Fig. 15. Inner surface of the convex valve.

  Fig. 16. Magnified hinge teeth of the flat, and fig. 17, of the
         convex valve.

  Fig. 18. Magnified view of the adpressed spines on the external
         surface of the shell.

[Illustration: Plate LXIV.]


PLATE LXIV.

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.

Public-domain text, read in full here on John Shaqi.

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."

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