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近年来,不少学者对江苏泗洪地区新生界地层和化石进行研究。杨仲健、周明镇、王伴月、毕治国、李传夔等从哺乳动物化石的不断发现,证实泗洪地区中新统地层的存在,并对苏北新第三纪—更新世的地层作了划分。1975年至1977年,江苏区测队对该地区中新统地层,包括“下草湾组”进行了研究,发现了脊椎动物、植物、瓣鳃类、介形类、腹足类、轮藻以及灵长类的化石,为中新统的进一步划分提供了依据。南京地质古生物研究所、南京地质矿产研究所等单位也从介形虫、孢粉、轮藻化石等方面,在这一地区做了研
In recent years, many scholars have studied the Cenozoic strata and fossils in Sihong area, Jiangsu Province. Yang Zhongjian, Zhou Mingzhen, Wang Jianyue, Bi Zhiguo and Li Chuanxuan confirmed the existence of the Miocene strata in Sihong area from the continuous discovery of mammalian fossils and delimited the Neoproterozoic-Pleistocene strata. From 1975 to 1977, a survey team from Jiangsu Province conducted a study on the Miocene strata in the area, including the “Xiaochawan Formation,” and found that vertebrates, plants, petals, ostracods, gastropods, Primate fossils, provide the basis for the further division of the Miocene. Nanjing Institute of Geology and Palaeontology, Nanjing Institute of Geology and Mineral Resources and other units also from ostracods, sporo-polio, Chara fossil, etc., made a research in this area