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 <small>d'Orbigny, 1863</small>
- Pseudothurmannia belimelensis <small>Dimtrova, 1967</small>
- ?Pseudothurmannia biassalensis <small>Dimtrova, 1967</small>
- Pseudothurmannia catulloi <small>Parona, 1898</small>
- ?Pseudothurmannia crimensis <small>Wiedmann, 1962</small>
- Pseudothurmannia grandis <small>Busnardo, 1970</small>
- Pseudothurmannia isocostata <small>Kakabadze, 1981</small>
- Pseudothurmannia karakaschi <small>Manolov, 1962</small>
- Pseudothurmannia lurensis <small>Busnardo, 1970</small>
- Pseudothurmannia macilenta <small>d'Orbigny, 1841</small>
- Pseudothurmannia mortilleti <small>Pictet and de Loriol, 1858</small>
- Pseudothurmannia ohmi <small>Winkler, 1868</small>
- Pseudothurmannia picteti <small>Sarkar, 1955</small>
- Pseudothurmannia provencalis <small>Wiedmann, 1962</small>
- Pseudothurmannia pseudomalbosi <small>Sarasin and Schandelmayer, 1901</small>
- Pseudothurmannia renevieri <small>Sarasin and Schöndelmayer, 1901</small>
- Pseudothurmannia rugosa <small>Busnardo, 2003</small>
- Pseudothurmannia sarasini <small>Sarkar, 1955</small>
Description
Shell of Pseudothurmannia species can reach a diameter of about . 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.
References
External links