Kingdom Animalia Phylum Mollusca Subclass Ammonites | Family Perisphinctidae Rank Genus | |
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Similar Pachyceras, Pleuroceras solare, Pseudothurmannia | ||
Progeronia is a genus of ammonites belonging to the family Perisphinctidae.
Contents
These fast-moving nektonic carnivores lived in the Jurassic period, from 155.7 to 150.8 Ma.
Species
Species within this genus include:
Description
Shells of Progeronia species can reach a diameter of 6–23 millimetres (0.24–0.91 in). These large shell are large and involute, with a bifurcated or trifurcated ribs.
Distribution
Fossils of species within this genus have been found in the Jurassic sediments of Algeria and Hungary.
References
Progeronia Wikipedia(Text) CC BY-SA