Harpoceras Ammonite | Germany vert 40mm in diameter

40mm in diameter

The tissue forming the outermost layer of glyptosaurine osteoderms is similar to tooth enamel and is called osteodermine

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weight: 27 lbs

Harpoceras Ammonite | Germany vert 40mm in diameterHarpoceras sp. Early Jurassic (180 MYO) Posidonia Shale Holzmaden, Germany Ammonite approx. size: 8. 5" x 7" Plate approx. size: 13. 5" x 10. 25" This Harpoceras ammonite from the Posidonia Shale in Holzmaden, Germany has been compressed on black slate and is partially pyritized. Ammonoids are a group of extinct marine mollusk animals in the subclass Ammonoidea of the class Cephalopoda. These mollusks, commonly referred to as ammonites, are more