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
Live-action animated film "The Lost World" (1925). In the 1935 Soviet film "The New Gulliver", the only character who wasn't animated was Gulliver himself. The 1940 Warner Bros. cartoon "You Ought to Be in Pictures", directed by Friz Freleng, featured Warner Bros. characters interacting with live-action people. The animated sequence in the 1945 film "Anchors Aweigh" in which Gene Kelly dances with an animated Jerry Mouse, is one of the actor's most famous scenes. Throughout the decades, Disney experimented with mixed segments of live action and animation in several notable films, which are primarily considered live action. In "The Three Caballeros", released in