Harpoceras Ammonite | Germany Struth (Multiple fish display picture to

(Multiple fish display picture to see variations)

Whether they persisted until this catastrophic event or succumbed to earlier environmental shifts remains a subject of ongoing paleontological investigation

include 10 modern species

which were found together with those of reindeer

and humid environments

Harpoceras Ammonite | Germany Struth (Multiple fish display picture toHarpoceras sp. Early Jurassic (180 MYO) Posidonia Shale Holzmaden, Germany Ammonite approx. size: 9" x 7. 75" Plate approx. size: 11. 75" x 10. 75" 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