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我国非海相白垩纪介形类化石可以划分为7个组合:1)分布于我国西北和西南地区欧特里沃期巴列姆期的Jingguella-Minheella-Pinnocypridea组合;2)分布于我国西北和西南地区巴列姆期的Cypridea-Latonia-Darwinula组合;3)阿普特期阿尔必期的Cypridea(Morinina)-Bisulcocypridea-Mongolocypris组合;4)分布于我国东北、中部及东部地区欧特里沃期巴列姆期的Cypridea-Mongolianella-Darwinula组合;5)分布于我国东北、中部及东部地区巴列姆期阿普特期的Cypridea(Cypridea)-Cypridea(Ulwellia)-Limnocypridea组合;6)塞诺曼期塞农期的Cypridea-Triangulicypris-Sunliavia-Lycopterocypris组合;7)坎潘期马斯特里赫特期的Talicypridea-Cypridea-Quadracypris-Candona组合。依据以上7个介形类化石组合,我国22个地区含介形类的73个地层单元(群/组)得到了对比。
China’s non-marine Cretaceous ostracods can be divided into seven groups: 1) Jingguella-Minheella-Pinnocypride combination in the Baltimore period of the Autre-Volga region in northwest and southwest China; 2) Cypridea-Latonia-Darwinula assemblage in the Balmain period in Southwest China; 3) Cypridea (Morinina) -Bisulcocypride- Mongolocypris combination in Alpine period in the Aptite period; and 4) distribution in the northeast, central and eastern parts of the Autre- Cypridea-Mongolianella-Darwinula assemblage in the Balmain period; 5) Cypridea (Cypridea) -Cypridea (Ulwellia) -Limnocypridea assemblage distributed in the Baltimore APT in the northeast, central and eastern regions of China; 6) Cypridea-Triangulicypris-Sunliavia-Lycopterocypris combination during the period of Seychelles; and 7) Talicypridea-Cypridea-Quadracypris-Candona combination during the Maastrichtian period of Campan. Based on the above seven fossil assemblages, 73 stratigraphic units (groups / groups) containing ostracods in 22 regions of China are contrasted.