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 Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: †Ammonoidea
Order: †Ammonitida
Suborder: †Ancyloceratina
Family: †Crioceratitidae
Genus: †Pseudothurmannia
Spath, 1923
Synonyms
  • Kakabadziella Hoedemaeker and Herngreen, 2003
  • Parathurmannia Busnardo, 2003
  • Prieuriceras Vermeulen, 2004

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

Species

[3]

Description

Shell of 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, Bulgaria, Czechoslovakia, France, Hungary, Italy, Japan, Morocco, Spain, Russia and United States.[1]

References

  1. ^ a b c The Paleobiology Database
  2. ^ Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopoda
  3. ^ Klein, J. et al., 2007. FOSSILIUM CATALOGUS I:ANIMALIA Pars 144, Lower Cretaceous Ammonites III Bochianitoidea, Protancyloceratoidea, Ancyloceratoidea, Ptychoceratoidea.

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