Platyclymenia

Platyclymenia is a genus of ammonites belonging to the family Platyclymeniidae.

These fast-moving nektonic carnivores lived in the Devonian period, Famennian stage (364.7 to 360.7 Ma).

Species
Species within the genus Platyclymenia include:
 * Platyclymenia alterna Jenkins 1968
 * Platyclymenia americana Raymond 1907
 * Platyclymenia annulata Munster 1832
 * Platyclymenia eurylobica Petersen 1975
 * Platyclymenia levata Hartenfels & Becker 2016
 * Platyclymenia montana Korn & Titus 2006
 * Platyclymenia teicherti Jenkins 1968

Description
Shells of Platyclymenia species can reach a diameter of 0.7 - 47 mm.

Distribution
Fossils of species within this genus have been found in the Devonian sediments of Australia, China, Morocco, Poland and United States.