"Poekilopleuron" is a genus of theropod with a long and complex history. The genus was first named and described by Jacques-Amand Eudes-Deslongchamps in a report published in 1836, based on holotype material that is now destroyed. In 1837, Eudes-Deslongchamps published a more detailed account of this discovery in a monograph which was also inserted next year in volume 6 of the "Mémoires de la Société Linnéenne Normandie".