Parkinsonia (ammonite)
Parkinsonia is a genus of ammonites belonging to the family Parkinsoniidae.[2] These fast-moving nektonic carnivores lived from the Bajocian age to the Bathonian age of the Middle Jurassic.[1] DescriptionParkinsonia species have a compressed spiral shell with strong ribbing.[3] DistributionFossils of species within this genus have been found in the Jurassic of France, Germany, Iran, Russia, United Kingdom, and United States.[2] References
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