Reconstruction of the new ammonite genus between jellyfish - based on the hypothesis that some uncoiled ammonites were free-floating and lived feeding on plankton.

In honor of Jens Lehmann, French and Swiss geoscientists described a new ammonite genus as Jenslehmannella. The reasoning for the nomination is as follows: "Named in honor of the German palaeontologist PD Dr. Jens Lehmann (Bremen) for his many contributions in increasing our understanding of the Cretaceous ammonite palaeontology". Jens Lehmann is head of the Geoscientific Collection at FB 5. Jenslehmannella is an ammonite from the special group of uncoiled ammonites, in which the coiling is open and thus the whorls are not attached to each other. The new genus was described from the early Cretaceous of Iran and indicates that there was a higher biological diversity in the eastern Tethys at the end of the early Cretaceous period, and that there was no close relationship with the European fauna area in clear contrast to later time slices of this period.