浙江普陀山岛晚更新世的两种木化石

TWO SPECIES OF LATE PLEISTOCENE WOOD FOSSILS FROM PUTUOSHAN ISLAND,ZHEJIANG PROVINCE

报道普陀山岛飞沙岙晚更新世湖泊相沉积地层中发现的槐树属Ｓｏｐｈｏｒａ ｊａｐｏｎｉｃａ 和枫杨属Ｐｔｅｒｏｃａｒｙａ ｓｔｅｎｏｐｔｅｔａ 化石。在其邻近层位还发现Ｅｕｒｙａｌｅ ｆｅｒｏｘ ；Ｎｅｌｕｍｂｏ ｎｕｃｉｆｅｒａ ；Ｓｃｌｅｒｉａ ｏｒｙｚｏｉｄｅｓ；Ｐｏｔａｍｏｇｅｔｏｎ ｄｉｓｔｉｎｃｔｕｓ；Ｅｌｅｏｃｈａｒｉｓ ｐｌａｎｔａｇｉｎｅｉｆｏｒｍｉｓ 和昆虫化石Ｃｈｙｓｏｍｅｌｉｄａｅ。显示出普陀山岛飞沙岙一带曾经是植物繁茂之地，为推测古环境提供了证据。

Two species of wood fossils ( Sophora japonica,Pterocarya stenopteta )and a large number of seed fossils of Euryale ferox,Nelumbo nucifera,Scleria oryzoides,Potamogeton distinctus and Eleocharis plantagineiformis are discovered and here reported from the Late Pleistocene lacustrine sedimentary sequence in Feishaao,Putuoshan Island.In association with these a small insect fossil of Chysomelidae is found.Judging from the abundant presence of plant seeds and fragments of branches and barks showing differentiation in size and shape,the fossil wood vicinity(Feishaao)might have been an area with luxuriant plants,providing new evidence to decipher the paleoclimate and paleoenvironment in the area.