摘要
TheHezhengareaofGansuProvinceproducesthemostabundantmammalfossilsinChinaaswellasthewholeEurasia,anditalsoproducesotherCenozoicfossilsofdifferentanimalsandplants.Therefore,allofthemarenamedtheHezhengBiota.Mammalsareverysensitivetoenvironmentalchanges,andthustheevolutionofmammalianfaunasintheHezhengareareflectsthestrongupliftoftheTibetanPlateauduringtheLateCenozoic,whichdramaticallyaffectsenvironmentalchanges.IntheHezhengarea,micromammalsarenotveryrich,butsomeofthemstillareimportant.ItisrelativelyuncommonthatthreeprimatesarefoundfromtheMiddleMioceneandtheEarlyPleistocenedeposits.SincetheMiddleMiocene,carnivoreshavebecomeimportantcomponentsintheecosystemoftheHezhengarea,anddominatedintheEarlyPleistocene.TheMiddleMioceneisatimeofhighdiversityforProboscidea,characterizedbyshovel-tuskedelephants.PerissodactylsintheHezhengareaareveryabundant,especiallyLateOligoceneandLateMiocenerhinocerosesaswellastheLateMioceneandEarlyPleistocenehorses.FromtheMiddleMiocene,artiodactylsbecameimportantcomponentsofthemammalianfaunas,especiallybovids.
出版日期
2005年06月16日(中国期刊网平台首次上网日期,不代表论文的发表时间)