Pleistocene The lower boundary of the Pleistocene Series is formally defined magnetostratigraphically as the base of the Matuyama (C2r) chronozone, isotopic stage 103. Above this point there are notable extinctions of the calcareous nanofossils: "Discoaster pentaradiatus" and "Discoaster surculus". The Pleistocene covers the recent period of repeated glaciations. The name Plio-Pleistocene has, in the past, been used to mean the last ice age. The revised definition of the Quaternary, by pushing back the start date of the Pleistocene to 2.58 Ma, results in the inclusion of all the recent repeated glaciations within the Pleistocene. The modern continents were essentially at their
The Time Machine (2002 film) The Time Machine (2002 film) The Time Machine is a 2002 American science fiction film loosely adapted from the 1895 novel of the same name by H. G. Wells and the screenplay of the 1960 film of the same name by David Duncan. Arnold Leibovit served as executive producer and Simon Wells, the great-grandson of the original author, served as director. The film stars Guy Pearce, Jeremy Irons, Orlando Jones, Samantha Mumba, Mark Addy, Sienna Guillory and Phyllida Law, and includes a cameo by Alan Young, who also appeared in the 1960 film adaptation. The film is set in New