摘要
本文研究的介形类材料,是作者于1977、1978年配合云南地质局钾盐研究队地层组工作时所采,少数是钾盐研究队踏勘时采集的。文中描述的化石,共有12属、20种,其中有一新亚属、10新种。晚白垩世—早第三纪含盐地层作者根据两年来的野外工作及近年来对勐野井组及其介形类化石的研究,认为《云南中生代红层》书中将勐野井组,置于上白垩统,同时将云龙和勐腊地区的含盐层的地质时代归到早第三纪,从而得出了:存在两套不同时代的含盐层的结论,根据是不足的。
The ostracods described in this paper were obtained from the Late Cretaceous-Early Tertiary salt-bearing deposits in Lanping-Simao area,Yunnan.They contain 20 species and 12 genera including 10 new species and 1 new subgenus.From the faunal analyses,two assemblages may be recognized:(1)Sinocypris-Cypris-Parailyocypris assemblage(Palaeo-cene);(2)Cypridea-Cristocypridea-Quadracy-pris assemblage(Late Cretaceous).It is inte-resting to point out that the appearance of new subgenus Cristocypris,a transitional form between Cypris and Cristocypridea,affords an important evidence for the age of Mengyejing Formation,and throws light upon the relation of the above two genera.
作者
叶春辉
蒋志文
Ye Chun-hui;Jiang Zhi-wen(Nanjing Institute of Geology and Palaeontology,Academia Sinica;Yunnan Institute of Geology)
出处
《古生物学报》
1981年第2期153-164,198-200,共15页
Acta Palaeontologica Sinica
