Pseudothurmannia
# Pseudothurmannia

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 lived in the Cretaceous period, from Hauterivian age to Barremian age.

## Species

* Pseudothurmannia angulicostata d'Orbigny, 1863
* Pseudothurmannia belimelensis Dimtrova, 1967
* ?Pseudothurmannia biassalensis Dimtrova, 1967
* Pseudothurmannia catulloi Parona, 1898
* ?Pseudothurmannia crimensis Wiedmann, 1962
* Pseudothurmannia grandis Busnardo, 1970
* Pseudothurmannia isocostata Kakabadze, 1981
* Pseudothurmannia karakaschi Manolov, 1962
* Pseudothurmannia lurensis Busnardo, 1970
* Pseudothurmannia macilenta d'Orbigny, 1841
* Pseudothurmannia mortilleti Pictet and de Loriol, 1858
* Pseudothurmannia ohmi Winkler, 1868
* Pseudothurmannia picteti Sarkar, 1955
* Pseudothurmannia provencalis Wiedmann, 1962
* Pseudothurmannia pseudomalbosi Sarasin and Schandelmayer, 1901
* Pseudothurmannia renevieri Sarasin and Schöndelmayer, 1901
* Pseudothurmannia rugosa Busnardo, 2003
* Pseudothurmannia sarasini Sarkar, 1955

## 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.

