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Pseudothurmannia

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Pseudothurmannia
Temporal range: Cretaceous, 136.4–99.7 Ma [1]
Fossil shells of Pseudothurmannia species from Alpes-de-Haute-Provence, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ammonitida
Superfamily:
Ancylocerataceae
Family:
Crioceratitidae
Genus:
Pseudothurmannia

Spath 1923
Synonyms
  • Kakabadziella Hoedemaeker and Herngreen 2003
  • Parathurmannia Busnardo 2003
  • Prieuriceras Vermeulen 2004

Pseudothurmannia is an extinct cephalopod genus belonging to the subclass Ammonoidea and included in the family Crioceratidae of the ammonitid superfamily Ancylocerataceae. These fast-moving nektonic carnivores [1] lived in the Cretaceous period, from Hauterivian age to Barremian age.[2]

Species

[1]

  • Pseudothurmannia angulicostata d'Orbigny 1863
  • Pseudothurmannia belimelensis Dimtrova 1967
  • Pseudothurmannia grandis Busnardo 1970
  • Pseudothurmannia jupiter Anderson 1938
  • Pseudothurmannia mortilleti Pictet and de Loriol 1858
  • Pseudothurmannia ohmi Winkler 1868
  • Pseudothurmannia picteti Sarkar 1955
  • Pseudothurmannia pseudomalbosi Sarasin and Schandelmayer 1901
  • Pseudothurmannia renevieri Sarasin and Schöndelmayer 1901
  • Pseudothurmannia russelli Anderson 1938

Description

Shell os Pseudothurmannia species can reach a diameter of about 4–12 centimetres (1.6–4.7 in). They show flat or slightly convex sides, a surface with dense ribs and a subquadrate whorl section.

Distribution

Fossils of species within this genus have been found in the Cretaceous rocks of Antarctica, Czechoslovakia, France, Hungary, Italy, Japan, Morocco, Spain, Russia and United States.[1]

References

  1. ^ a b c d The Paleobiology Database
  2. ^ Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopoda


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