Erkunde Paläo und noch mehr!

Osperleioceras rivierense.jpg (681×512)

Osperleioceras rivierense.jpg (681×512)

Steinkern.de - Die Fossilien-Community - Fossils on Majorca – the collection José Juárez Ruiz and an excursion to Majorcan Lower Cretaceous

Steinkern.de - Die Fossilien-Community - Fossils on Majorca – the collection José Juárez Ruiz and an excursion to Majorcan Lower Cretaceous

Ammonites, Sedgwick Museum, Cambridge, England, 2007.  Photo by Beverly Sensbach

Ammonites, Sedgwick Museum, Cambridge, England, 2007. Photo by Beverly Sensbach

A spectacular ammonite is a Cleoniceras besairei from Madagascar which has been polished to show the wonderful fire opal iridescence for which they are known. This is a consequence of light passing through the various layers of aragonite and conchiolin deposited by the ammonite in life.

A spectacular ammonite is a Cleoniceras besairei from Madagascar which has been polished to show the wonderful fire opal iridescence for which they are known. This is a consequence of light passing through the various layers of aragonite and conchiolin deposited by the ammonite in life.

Goniatites. Photo D Locke | In China? Try www.importedFun.com for award winning kid's science |

Goniatites. Photo D Locke | In China? Try www.importedFun.com for award winning kid's science |

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