Progeronia

{{Short description|Genus of molluscs (fossil)}}

{{Taxobox

| name = Progeronia

| image = Perisphinctidae - Progeronia lictor.JPG

| image_width = 250px

| image_caption = Progeronia lictor from Tulear (Madagascar), Kimmeridgian stage

| fossil_range = {{fossil range|155.7|150.8|Jurassic}}

| regnum = Animalia

| phylum = Mollusca

| classis = Cephalopoda

| subclassis = Ammonoidea

| familia = Perisphinctidae

| genus = Progeronia

| genus_authority = (Arkell 1953)

}}

Progeronia is a genus of ammonites belonging to the family Perisphinctidae.[http://corbieres-fossiles.pagesperso-orange.fr/Page%20kimm%E9ridgien%20gardois%202.htm Corbieres Fossiles]

These fast-moving nektonic carnivores lived in the Jurassic period, from 155.7 to 150.8 Ma.[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=15457 Fossilworks]

Species

Species within this genus include:Almeras Yves, 1963: [http://eurekamag.com/research/030/147/030147846.php 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

  • Progeronia breviceps
  • Progeronia lictor
  • Progeronia polyplocoides

Description

Shells of Progeronia species can reach a diameter of {{convert|6|-|23|mm}}. 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

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