Progeronia

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Progeronia
Temporal range: Jurassic
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Perisphinctidae - Progeronia lictor.JPG
Progeronia lictor from Tulear (Madagascar), Kimmeridgian stage
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Family:
Perisphinctidae
Genus:
Progeronia

(Arkell, 1953)

Progeronia is a genus of ammonites belonging to the family Perisphinctidae. [1]

Contents

These fast-moving nektonic carnivores lived in the Jurassic period, from 155.7 to 150.8 Ma. [2]

Species

Species within this genus include: [3]

Description

Shells of Progeronia species can reach a diameter of 6–23 millimetres (0.24–0.91 in). [1] These large shell are large and involute, with a bifurcated or trifurcated ribs. [1]

Distribution

Fossils of species within this genus have been found in the Jurassic sediments of Algeria and Hungary. [2]

References

  1. 1 2 3 Corbieres Fossiles
  2. 1 2 Fossilworks
  3. ↑ Almeras Yves, 1963: Application des methodes biometriques et statistiques a letude de quelques Perisphinctides kimmeridgiens du genre Progeronia, Arkell, 1953 Bulletin du Bureau de Recherches Geologiques et Minieres, Section 2: Geologie Appliquee, Chronique des Mines 3 – Pg. 1-28
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