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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."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

Fig. 4. The Helmet Echinite, (_Ananchytes ovatus_, of Lamarck,)
         from the Chalk of Kent. This is a characteristic species of
         the white chalk, and abounds in the strata of the North and
         South Downs. At Northfleet, near Gravesend, the quarry-men
         find beautiful specimens.

  Fig. 5. An oval echinite (_Nucleolites_,) from Verona.

  Fig. 6. A portion of a very flat echinite, in which the rays or
         ambulacra are in a floriform arrangement, (_Echinodiscus
         bisperforatus_, of Parkinson; _Lobophora biperforata_, of
         Desor,) from Tertiary Strata, Verona.

  Fig. 7. A small discoidal echinite (_Discoidea subuculus_, of
         Leske,) from the upper greensand of Warminster.

  Fig. 8. The floriform radiated part of the shell of an echinite
         (_Clypeaster_), from the tertiary strata of Malta.

  Fig. 9. A cast in flint of part of the interior of the case or
         shell of an echinite.

  Fig. 10. An elegant conical echinite (_Conulus albogalerus_, of
         Leske; _Galerites_, of Agassiz), common in the chalk of Kent
         and Sussex.

  Fig. 11. View of the base of fig. 10, showing the situation of
         the two apertures of the shell.

[Illustration: Plate LV.]


PLATE LV.

Fossil Sea-Urchins, or Echinites.

  Fig. 1. The shell of a Turban Echinite (_Cidaris saxatilis_, of
         Parkinson), broken in two, and each piece imbedded in the
         same fragment of flint. From Kent.

  Fig. 2. A round Buckler Echinite (_Echinodiscus_ (_Clypeaster_)
         _subrotundus_, of Parkinson), from Italy.

  Fig. 3. The upper surface of an Echinite (_Spatangites_
         (_Disaster_, of Agassiz) _ovalis_, of Parkinson); from
         Scarborough.

  Fig. 4. View of the upper, and fig. 5, of the lower surface of
         an Echinite, (_Spatangus_ (_Hemipneaster_, of Agassiz)
         _radiatus_, of Parkinson,) from the cretaceous strata of St.
         Peter's Mountain, Maestricht.

  Fig. 6. A small Echinite (_Echinites_ (_Nucleolites_, of Leske)
         _pyriformis_, of Parkinson), from the cretaceous strata of
         Maestricht.

  Fig. 7. A small Echinite of a different genus (_Echinites_
         (_Cassidulus_, of Lamarck,) _Lapis cancri_, of Parkinson),
         from Maestricht.

  Fig. 8. An Echinite (_Spatangites_ (_Nucleolites_) _brissoides
         ovalis_, of Parkinson). Locality unknown.

  Fig. 9. A beautiful specimen of a large heart-shaped Echinite of
         a recent species (_Spatangus purpureus_), from a modern
         tertiary deposit, Malta.

  Fig. 10. An Echinite (_Echinodiscus_ (_Clypeaster_) _laganum_, of
         Parkinson), from a tertiary deposit, Verona.

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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."

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