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
Escalation (1968 animated film) Escalation (1968 animated film) Escalation is a 1968 animated short film, directed by Disney animator Ward Kimball. It is an anti-Vietnam War cartoon mocking U.S. President, Democrat Lyndon B. Johnson. The short was made independently from the Disney Studios and is notable for being the only animated cartoon made in this matter by one of Disney's core animators, the "Nine Old Men." Kimball showed it at film festivals, college campuses during the US presidential elections year in 1968 and personally gave away copies of the film to whomever was interested. In a 2000 interview shortly before his death Kimball said