Parkinsonia (ammonite)

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Temporal range: Middle Jurassic from Bajocian to Bathonian, 171.6–164.7 Ma
Parkinsonia parkinsoni NHM.jpg
Fossil of Parkinsonia parkinsoni from Great Britain, on display at the Natural History Museum, London
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Superfamily: Perisphinctoidea
Family: Parkinsoniidae
Genus: Parkinsonia
Bayle 1878

Parkinsonia is a genus of ammonites belonging to the family Parkinsoniidae.[2]

These fast-moving nektonic carnivores lived during from the Bajocian age to the Bathonian age of the Middle Jurassic.[3]


Parkinsonia species have a compressed spiral shell with strong ribbing.[4][5]


Fossils of species within this genus have been found in the Jurassic of France, Germany, Iran, Russia, United Kingdom, and United States.[1]